51457870 has 16 divisors (see below), whose sum is σ = 94884048. Its totient is φ = 20080960.

The previous prime is 51457843. The next prime is 51457891. The reversal of 51457870 is 7875415.

51457870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 62344 + ... + 63163.

It is an arithmetic number, because the mean of its divisors is an integer number (5930253).

Almost surely, 2^51457870 is an apocalyptic number.

51457870 is a deficient number, since it is larger than the sum of its proper divisors (43426178).

51457870 is a wasteful number, since it uses less digits than its factorization.

51457870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125555.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 51457870 is about 7173.4141104498. The cubic root of 51457870 is about 371.9494622447.

The spelling of 51457870 in words is "fifty-one million, four hundred fifty-seven thousand, eight hundred seventy".