51304415 has 4 divisors (see below), whose sum is σ = 61565304. Its totient is φ = 41043528.

The previous prime is 51304399. The next prime is 51304423. The reversal of 51304415 is 51440315.

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 51304415 - 2⁴ = 51304399 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, 5130437 + ... + 5130446.

It is an arithmetic number, because the mean of its divisors is an integer number (15391326).

Almost surely, 2^51304415 is an apocalyptic number.

51304415 is a deficient number, since it is larger than the sum of its proper divisors (10260889).

51304415 is a wasteful number, since it uses less digits than its factorization.

51304415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260888.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51304415 is about 7162.7100318245. The cubic root of 51304415 is about 371.5793579452.

The spelling of 51304415 in words is "fifty-one million, three hundred four thousand, four hundred fifteen".