51164199 has 12 divisors (see below), whose sum is σ = 74170512. Its totient is φ = 33986400.

The previous prime is 51164189. The next prime is 51164209. The reversal of 51164199 is 99146115.

51164199 is a `hidden beast` number, since 5 + 1 + 1 + 641 + 9 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (51164189) and next prime (51164209).

It is not a de Polignac number, because 51164199 - 2⁸ = 51163943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51164119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7587 + ... + 12644.

It is an arithmetic number, because the mean of its divisors is an integer number (6180876).

Almost surely, 2^51164199 is an apocalyptic number.

51164199 is a deficient number, since it is larger than the sum of its proper divisors (23006313).

51164199 is a wasteful number, since it uses less digits than its factorization.

51164199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20518 (or 20515 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 51164199 is about 7152.9154196034. The cubic root of 51164199 is about 371.2405377992.

The spelling of 51164199 in words is "fifty-one million, one hundred sixty-four thousand, one hundred ninety-nine".