253056636 has 60 divisors (see below), whose sum is σ = 756052528. Its totient is φ = 72301248.

The previous prime is 253056623. The next prime is 253056641. The reversal of 253056636 is 636650352.

It is a super-2 number, since 2×253056636² = 128075322047272992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 253056636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53521 + ... + 58056.

Almost surely, 2^253056636 is an apocalyptic number.

It is an amenable number.

253056636 is an abundant number, since it is smaller than the sum of its proper divisors (502995892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253056636 is a wasteful number, since it uses less digits than its factorization.

253056636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111600 (or 111589 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 253056636 is about 15907.7539583689. The cubic root of 253056636 is about 632.5175452751.

The spelling of 253056636 in words is "two hundred fifty-three million, fifty-six thousand, six hundred thirty-six".