51550656 has 28 divisors (see below), whose sum is σ = 136394952. Its totient is φ = 17183488.

The previous prime is 51550649. The next prime is 51550693. The reversal of 51550656 is 65605515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134055 + ... + 134438.

Almost surely, 2^51550656 is an apocalyptic number.

It is an amenable number.

51550656 is an abundant number, since it is smaller than the sum of its proper divisors (84844296).

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

51550656 is a wasteful number, since it uses less digits than its factorization.

51550656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268508 (or 268498 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 51550656 is about 7179.8785505049. The cubic root of 51550656 is about 372.1728876109.

The spelling of 51550656 in words is "fifty-one million, five hundred fifty thousand, six hundred fifty-six".