51164406 has 32 divisors (see below), whose sum is σ = 113932800. Its totient is φ = 17019720.

The previous prime is 51164401. The next prime is 51164417. The reversal of 51164406 is 60446115.

51164406 is a `hidden beast` number, since 5 + 11 + 644 + 0 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 51164406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51164401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49111 + ... + 50141.

It is an arithmetic number, because the mean of its divisors is an integer number (3560400).

Almost surely, 2^51164406 is an apocalyptic number.

51164406 is an abundant number, since it is smaller than the sum of its proper divisors (62768394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51164406 is a wasteful number, since it uses less digits than its factorization.

51164406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961 (or 1955 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51164406 is about 7152.9298892132. The cubic root of 51164406 is about 371.2410384532.

The spelling of 51164406 in words is "fifty-one million, one hundred sixty-four thousand, four hundred six".