51164013 has 4 divisors (see below), whose sum is σ = 68218688. Its totient is φ = 34109340.

The previous prime is 51164011. The next prime is 51164039. The reversal of 51164013 is 31046115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51164013 - 2¹ = 51164011 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51164011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8527333 + ... + 8527338.

It is an arithmetic number, because the mean of its divisors is an integer number (17054672).

Almost surely, 2^51164013 is an apocalyptic number.

It is an amenable number.

51164013 is a deficient number, since it is larger than the sum of its proper divisors (17054675).

51164013 is a wasteful number, since it uses less digits than its factorization.

51164013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17054674.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51164013 is about 7152.9024179000. The cubic root of 51164013 is about 371.2400879350.

The spelling of 51164013 in words is "fifty-one million, one hundred sixty-four thousand, thirteen".