52978965 has 24 divisors (see below), whose sum is σ = 91792800. Its totient is φ = 26080704.

The previous prime is 52978957. The next prime is 52978999. The reversal of 52978965 is 56987925.

It is a happy number.

It is not a de Polignac number, because 52978965 - 2³ = 52978957 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7915 + ... + 12984.

It is an arithmetic number, because the mean of its divisors is an integer number (3824700).

Almost surely, 2^52978965 is an apocalyptic number.

It is an amenable number.

52978965 is a deficient number, since it is larger than the sum of its proper divisors (38813835).

52978965 is a wasteful number, since it uses less digits than its factorization.

52978965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20933 (or 20920 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 51.

The square root of 52978965 is about 7278.6650561762. The cubic root of 52978965 is about 375.5788748395.

The spelling of 52978965 in words is "fifty-two million, nine hundred seventy-eight thousand, nine hundred sixty-five".