51183913 has 16 divisors (see below), whose sum is σ = 58233024. Its totient is φ = 44573760.

The previous prime is 51183911. The next prime is 51183919. The reversal of 51183913 is 31938115.

It is not a de Polignac number, because 51183913 - 2¹ = 51183911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51183911) 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, 26331 + ... + 28207.

It is an arithmetic number, because the mean of its divisors is an integer number (3639564).

Almost surely, 2^51183913 is an apocalyptic number.

It is an amenable number.

51183913 is a deficient number, since it is larger than the sum of its proper divisors (7049111).

51183913 is a wasteful number, since it uses less digits than its factorization.

51183913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992.

The product of its digits is 3240, while the sum is 31.

The square root of 51183913 is about 7154.2933263880. The cubic root of 51183913 is about 371.2882123863.

The spelling of 51183913 in words is "fifty-one million, one hundred eighty-three thousand, nine hundred thirteen".