253581056 has 72 divisors (see below), whose sum is σ = 522936960. Its totient is φ = 122674176.

The previous prime is 253581043. The next prime is 253581059. The reversal of 253581056 is 650185352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253581059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555631 + ... + 1555793.

Almost surely, 2^253581056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253581056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261468480).

253581056 is an abundant number, since it is smaller than the sum of its proper divisors (269355904).

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

253581056 is a wasteful number, since it uses less digits than its factorization.

253581056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 253581056 is about 15924.2285841418. The cubic root of 253581056 is about 632.9541747775.

The spelling of 253581056 in words is "two hundred fifty-three million, five hundred eighty-one thousand, fifty-six".