51291475 has 12 divisors (see below), whose sum is σ = 65081896. Its totient is φ = 40078080.

The previous prime is 51291433. The next prime is 51291497. The reversal of 51291475 is 57419215.

51291475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51291475 - 2²⁵ = 17737043 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51291475.

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 11 ways as a sum of consecutive naturals, for example, 22782 + ... + 24931.

Almost surely, 2^51291475 is an apocalyptic number.

51291475 is a deficient number, since it is larger than the sum of its proper divisors (13790421).

51291475 is a wasteful number, since it uses less digits than its factorization.

51291475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47766 (or 47761 counting only the distinct ones).

The product of its digits is 12600, while the sum is 34.

The square root of 51291475 is about 7161.8066854670. The cubic root of 51291475 is about 371.5481154021.

The spelling of 51291475 in words is "fifty-one million, two hundred ninety-one thousand, four hundred seventy-five".