51550756 has 12 divisors (see below), whose sum is σ = 90302940. Its totient is φ = 25749920.

The previous prime is 51550721. The next prime is 51550789. The reversal of 51550756 is 65705515.

It can be written as a sum of positive squares in 2 ways, for example, as 2073600 + 49477156 = 1440^2 + 7034^2 .

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, 1375 + ... + 10246.

It is an arithmetic number, because the mean of its divisors is an integer number (7525245).

Almost surely, 2^51550756 is an apocalyptic number.

It is an amenable number.

51550756 is a deficient number, since it is larger than the sum of its proper divisors (38752184).

51550756 is a wasteful number, since it uses less digits than its factorization.

51550756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12734 (or 12732 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 51550756 is about 7179.8855144076. The cubic root of 51550756 is about 372.1731282627.

The spelling of 51550756 in words is "fifty-one million, five hundred fifty thousand, seven hundred fifty-six".