51428570 has 32 divisors (see below), whose sum is σ = 98409168. Its totient is φ = 19283968.

The previous prime is 51428539. The next prime is 51428581. The reversal of 51428570 is 7582415.

51428570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 39601849 + 11826721 = 6293^2 + 3439^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59582 + ... + 60438.

Almost surely, 2^51428570 is an apocalyptic number.

51428570 is a deficient number, since it is larger than the sum of its proper divisors (46980598).

51428570 is a wasteful number, since it uses less digits than its factorization.

51428570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 51428570 is about 7171.3715564040. The cubic root of 51428570 is about 371.8788531013.

The spelling of 51428570 in words is "fifty-one million, four hundred twenty-eight thousand, five hundred seventy".