253965616 has 20 divisors (see below), whose sum is σ = 492838992. Its totient is φ = 126781376.

The previous prime is 253965599. The next prime is 253965617. The reversal of 253965616 is 616569352.

It is a super-2 number, since 2×253965616² = 128997068220518912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253965617) 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 3 ways as a sum of consecutive naturals, for example, 1915 + ... + 22618.

Almost surely, 2^253965616 is an apocalyptic number.

It is an amenable number.

253965616 is a deficient number, since it is larger than the sum of its proper divisors (238873376).

253965616 is a wasteful number, since it uses less digits than its factorization.

253965616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25188 (or 25182 counting only the distinct ones).

The product of its digits is 291600, while the sum is 43.

The square root of 253965616 is about 15936.2986919799. The cubic root of 253965616 is about 633.2739751079.

The spelling of 253965616 in words is "two hundred fifty-three million, nine hundred sixty-five thousand, six hundred sixteen".