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253933 = 1971289
BaseRepresentation
bin111101111111101101
3110220022221
4331333231
531111213
65235341
72105221
oct757755
9426287
10253933
11163869
12102b51
138b774
1468781
155038d
hex3dfed

253933 has 4 divisors (see below), whose sum is σ = 255420. Its totient is φ = 252448.

The previous prime is 253919. The next prime is 253937. The reversal of 253933 is 339352.

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 232324 + 21609 = 482^2 + 147^2 .

It is a cyclic number.

It is not a de Polignac number, because 253933 - 25 = 253901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253898 and 253907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253937) 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, 448 + ... + 841.

It is an arithmetic number, because the mean of its divisors is an integer number (63855).

2253933 is an apocalyptic number.

It is an amenable number.

253933 is a deficient number, since it is larger than the sum of its proper divisors (1487).

253933 is a wasteful number, since it uses less digits than its factorization.

253933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486.

The product of its digits is 2430, while the sum is 25.

The square root of 253933 is about 503.9176520028. The cubic root of 253933 is about 63.3246864157.

It can be divided in two parts, 2 and 53933, that added together give a palindrome (53935).

The spelling of 253933 in words is "two hundred fifty-three thousand, nine hundred thirty-three".

Divisors: 1 197 1289 253933