52978632 has 32 divisors (see below), whose sum is σ = 151368000. Its totient is φ = 15136704.

The previous prime is 52978609. The next prime is 52978633. The reversal of 52978632 is 23687925.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (52978633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157507 + ... + 157842.

It is an arithmetic number, because the mean of its divisors is an integer number (4730250).

Almost surely, 2^52978632 is an apocalyptic number.

It is an amenable number.

52978632 is an abundant number, since it is smaller than the sum of its proper divisors (98389368).

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

52978632 is a wasteful number, since it uses less digits than its factorization.

52978632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315365 (or 315361 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 52978632 is about 7278.6421810665. The cubic root of 52978632 is about 375.5780879359.

The spelling of 52978632 in words is "fifty-two million, nine hundred seventy-eight thousand, six hundred thirty-two".