253571916 has 24 divisors (see below), whose sum is σ = 637181104. Its totient is φ = 78022080.

The previous prime is 253571873. The next prime is 253571953. The reversal of 253571916 is 619175352.

It is a super-2 number, since 2×253571916² = 128597433167822112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812575 + ... + 812886.

Almost surely, 2^253571916 is an apocalyptic number.

253571916 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

253571916 is an abundant number, since it is smaller than the sum of its proper divisors (383609188).

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

253571916 is a wasteful number, since it uses less digits than its factorization.

253571916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625481 (or 1625479 counting only the distinct ones).

The product of its digits is 56700, while the sum is 39.

The square root of 253571916 is about 15923.9415974814. The cubic root of 253571916 is about 632.9465700156.

The spelling of 253571916 in words is "two hundred fifty-three million, five hundred seventy-one thousand, nine hundred sixteen".