51639074 has 16 divisors (see below), whose sum is σ = 81734400. Its totient is φ = 24400944.

The previous prime is 51639073. The next prime is 51639083. The reversal of 51639074 is 47093615.

51639074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51639073) by changing a digit.

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, 16784 + ... + 19620.

It is an arithmetic number, because the mean of its divisors is an integer number (5108400).

Almost surely, 2^51639074 is an apocalyptic number.

51639074 is a deficient number, since it is larger than the sum of its proper divisors (30095326).

51639074 is a wasteful number, since it uses less digits than its factorization.

51639074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 51639074 is about 7186.0332590380. The cubic root of 51639074 is about 372.3855456661.

The spelling of 51639074 in words is "fifty-one million, six hundred thirty-nine thousand, seventy-four".