51264415 has 4 divisors (see below), whose sum is σ = 61517304. Its totient is φ = 41011528.

The previous prime is 51264397. The next prime is 51264457. The reversal of 51264415 is 51446215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51264415 - 2⁵ = 51264383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5126437 + ... + 5126446.

It is an arithmetic number, because the mean of its divisors is an integer number (15379326).

Almost surely, 2^51264415 is an apocalyptic number.

51264415 is a deficient number, since it is larger than the sum of its proper divisors (10252889).

51264415 is a wasteful number, since it uses less digits than its factorization.

51264415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10252888.

The product of its digits is 4800, while the sum is 28.

The square root of 51264415 is about 7159.9172481251. The cubic root of 51264415 is about 371.4827643172.

The spelling of 51264415 in words is "fifty-one million, two hundred sixty-four thousand, four hundred fifteen".