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253512341 = 265795413
BaseRepresentation
bin11110001110001…
…00101010010101
3122200000202112222
433013010222111
51004344343331
641053352125
76165551015
oct1707045225
9580022488
10253512341
11120112635
1270a98645
13406a2304
1425951c45
15173c9b7b
hexf1c4a95

253512341 has 4 divisors (see below), whose sum is σ = 253610412. Its totient is φ = 253414272.

The previous prime is 253512331. The next prime is 253512361. The reversal of 253512341 is 143215352.

It is a happy number.

253512341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105987025 + 147525316 = 10295^2 + 12146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-253512341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253512341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253512331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45050 + ... + 50363.

It is an arithmetic number, because the mean of its divisors is an integer number (63402603).

Almost surely, 2253512341 is an apocalyptic number.

It is an amenable number.

253512341 is a deficient number, since it is larger than the sum of its proper divisors (98071).

253512341 is an equidigital number, since it uses as much as digits as its factorization.

253512341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98070.

The product of its digits is 3600, while the sum is 26.

The square root of 253512341 is about 15922.0708766165. The cubic root of 253512341 is about 632.8969973001.

Adding to 253512341 its reverse (143215352), we get a palindrome (396727693).

The spelling of 253512341 in words is "two hundred fifty-three million, five hundred twelve thousand, three hundred forty-one".

Divisors: 1 2657 95413 253512341