51978576 has 40 divisors (see below), whose sum is σ = 144608800. Its totient is φ = 15993216.

The previous prime is 51978559. The next prime is 51978617. The reversal of 51978576 is 67587915.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 41026 + ... + 42273.

It is an arithmetic number, because the mean of its divisors is an integer number (3615220).

Almost surely, 2^51978576 is an apocalyptic number.

It is an amenable number.

51978576 is an abundant number, since it is smaller than the sum of its proper divisors (92630224).

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

51978576 is a wasteful number, since it uses less digits than its factorization.

51978576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83323 (or 83317 counting only the distinct ones).

The product of its digits is 529200, while the sum is 48.

The square root of 51978576 is about 7209.6169107658. The cubic root of 51978576 is about 373.1998488205.

The spelling of 51978576 in words is "fifty-one million, nine hundred seventy-eight thousand, five hundred seventy-six".