51256790 has 32 divisors (see below), whose sum is σ = 101485440. Its totient is φ = 18520704.

The previous prime is 51256789. The next prime is 51256823. The reversal of 51256790 is 9765215.

It is a super-2 number, since 2×51256790² = 5254517042208200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51256790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1916 + ... + 10304.

It is an arithmetic number, because the mean of its divisors is an integer number (3171420).

Almost surely, 2^51256790 is an apocalyptic number.

51256790 is a deficient number, since it is larger than the sum of its proper divisors (50228650).

51256790 is a wasteful number, since it uses less digits than its factorization.

51256790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 51256790 is about 7159.3847501025. The cubic root of 51256790 is about 371.4643454554.

The spelling of 51256790 in words is "fifty-one million, two hundred fifty-six thousand, seven hundred ninety".