51292913 has 8 divisors (see below), whose sum is σ = 61705920. Its totient is φ = 41651280.

The previous prime is 51292907. The next prime is 51292949. The reversal of 51292913 is 31929215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51292913 - 2⁶ = 51292849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51292913.

It is not an unprimeable number, because it can be changed into a prime (51292903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192698 + ... + 192963.

It is an arithmetic number, because the mean of its divisors is an integer number (7713240).

Almost surely, 2^51292913 is an apocalyptic number.

It is an amenable number.

51292913 is a deficient number, since it is larger than the sum of its proper divisors (10413007).

51292913 is a wasteful number, since it uses less digits than its factorization.

51292913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385687.

The product of its digits is 4860, while the sum is 32.

The square root of 51292913 is about 7161.9070784254. The cubic root of 51292913 is about 371.5515875918.

The spelling of 51292913 in words is "fifty-one million, two hundred ninety-two thousand, nine hundred thirteen".