51779992 has 32 divisors (see below), whose sum is σ = 110522880. Its totient is φ = 22512160.

The previous prime is 51779989. The next prime is 51780017. The reversal of 51779992 is 29997715.

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 7 ways as a sum of consecutive naturals, for example, 10768 + ... + 14815.

It is an arithmetic number, because the mean of its divisors is an integer number (3453840).

Almost surely, 2^51779992 is an apocalyptic number.

It is an amenable number.

51779992 is an abundant number, since it is smaller than the sum of its proper divisors (58742888).

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

51779992 is a wasteful number, since it uses less digits than its factorization.

51779992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25623 (or 25619 counting only the distinct ones).

The product of its digits is 357210, while the sum is 49.

The square root of 51779992 is about 7195.8315711250. The cubic root of 51779992 is about 372.7239726277.

The spelling of 51779992 in words is "fifty-one million, seven hundred seventy-nine thousand, nine hundred ninety-two".