252529978 has 16 divisors (see below), whose sum is σ = 385776000. Its totient is φ = 123956352.

The previous prime is 252529973. The next prime is 252530017. The reversal of 252529978 is 879925252.

It is not an unprimeable number, because it can be changed into a prime (252529973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23818 + ... + 32746.

It is an arithmetic number, because the mean of its divisors is an integer number (24111000).

Almost surely, 2^252529978 is an apocalyptic number.

252529978 is a deficient number, since it is larger than the sum of its proper divisors (133246022).

252529978 is a wasteful number, since it uses less digits than its factorization.

252529978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9189.

The product of its digits is 907200, while the sum is 49.

The square root of 252529978 is about 15891.1918369894. The cubic root of 252529978 is about 632.0784449042.

The spelling of 252529978 in words is "two hundred fifty-two million, five hundred twenty-nine thousand, nine hundred seventy-eight".