51568790 has 64 divisors (see below), whose sum is σ = 116242560. Its totient is φ = 16035840.

The previous prime is 51568771. The next prime is 51568801. The reversal of 51568790 is 9786515.

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 31 ways as a sum of consecutive naturals, for example, 55046 + ... + 55974.

It is an arithmetic number, because the mean of its divisors is an integer number (1816290).

Almost surely, 2^51568790 is an apocalyptic number.

51568790 is an abundant number, since it is smaller than the sum of its proper divisors (64673770).

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

51568790 is a wasteful number, since it uses less digits than its factorization.

51568790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 51568790 is about 7181.1412741987. The cubic root of 51568790 is about 372.2165223090.

The spelling of 51568790 in words is "fifty-one million, five hundred sixty-eight thousand, seven hundred ninety".