51782992 has 10 divisors (see below), whose sum is σ = 100329578. Its totient is φ = 25891488.

The previous prime is 51782977. The next prime is 51783001. The reversal of 51782992 is 29928715.

It can be written as a sum of positive squares in only one way, i.e., 51782416 + 576 = 7196^2 + 24^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1618203 + ... + 1618234.

Almost surely, 2^51782992 is an apocalyptic number.

It is an amenable number.

51782992 is a deficient number, since it is larger than the sum of its proper divisors (48546586).

51782992 is a wasteful number, since it uses less digits than its factorization.

51782992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236445 (or 3236439 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 51782992 is about 7196.0400221233. The cubic root of 51782992 is about 372.7311707126.

The spelling of 51782992 in words is "fifty-one million, seven hundred eighty-two thousand, nine hundred ninety-two".