51164506 has 4 divisors (see below), whose sum is σ = 76746762. Its totient is φ = 25582252.

The previous prime is 51164471. The next prime is 51164521. The reversal of 51164506 is 60546115.

51164506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46580625 + 4583881 = 6825^2 + 2141^2 .

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 as a sum of consecutive naturals, namely, 12791125 + ... + 12791128.

Almost surely, 2^51164506 is an apocalyptic number.

51164506 is a deficient number, since it is larger than the sum of its proper divisors (25582256).

51164506 is a wasteful number, since it uses less digits than its factorization.

51164506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25582255.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51164506 is about 7152.9368793524. The cubic root of 51164506 is about 371.2412803146.

The spelling of 51164506 in words is "fifty-one million, one hundred sixty-four thousand, five hundred six".