253655523 has 64 divisors (see below), whose sum is σ = 434626560. Its totient is φ = 144698400.

The previous prime is 253655503. The next prime is 253655531. The reversal of 253655523 is 325556352.

It is not a de Polignac number, because 253655523 - 2⁶ = 253655459 is a prime.

It is a super-2 number, since 2×253655523² = 128682248696807058, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (253655503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 484740 + ... + 485262.

It is an arithmetic number, because the mean of its divisors is an integer number (6791040).

Almost surely, 2^253655523 is an apocalyptic number.

253655523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253655523 is a deficient number, since it is larger than the sum of its proper divisors (180971037).

253655523 is a wasteful number, since it uses less digits than its factorization.

253655523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 631 counting only the distinct ones).

The product of its digits is 135000, while the sum is 36.

The square root of 253655523 is about 15926.5665791469. The cubic root of 253655523 is about 633.0161268100.

The spelling of 253655523 in words is "two hundred fifty-three million, six hundred fifty-five thousand, five hundred twenty-three".