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245225053 = 277885289
BaseRepresentation
bin11101001110111…
…01011001011101
3122002102201112101
432213131121131
51000234200203
640200005101
76035243563
oct1647353135
9562381471
10245225053
11116472237
126a160791
133ba601a8
14247d5a33
15167de41d
hexe9dd65d

245225053 has 4 divisors (see below), whose sum is σ = 246110620. Its totient is φ = 244339488.

The previous prime is 245225033. The next prime is 245225083. The reversal of 245225053 is 350522542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350522542 = 2175261271.

It can be written as a sum of positive squares in 2 ways, for example, as 86918329 + 158306724 = 9323^2 + 12582^2 .

It is a cyclic number.

It is not a de Polignac number, because 245225053 - 213 = 245216861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245225033) 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, 442368 + ... + 442921.

It is an arithmetic number, because the mean of its divisors is an integer number (61527655).

Almost surely, 2245225053 is an apocalyptic number.

It is an amenable number.

245225053 is a deficient number, since it is larger than the sum of its proper divisors (885567).

245225053 is an equidigital number, since it uses as much as digits as its factorization.

245225053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885566.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 245225053 is about 15659.6632466985. The cubic root of 245225053 is about 625.9240118103.

Adding to 245225053 its reverse (350522542), we get a palindrome (595747595).

The spelling of 245225053 in words is "two hundred forty-five million, two hundred twenty-five thousand, fifty-three".

Divisors: 1 277 885289 245225053