51392465 has 8 divisors (see below), whose sum is σ = 64352448. Its totient is φ = 39326320.

The previous prime is 51392461. The next prime is 51392477. The reversal of 51392465 is 56429315.

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

It is not a de Polignac number, because 51392465 - 2² = 51392461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51392461) 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, 223331 + ... + 223560.

It is an arithmetic number, because the mean of its divisors is an integer number (8044056).

Almost surely, 2^51392465 is an apocalyptic number.

It is an amenable number.

51392465 is a deficient number, since it is larger than the sum of its proper divisors (12959983).

51392465 is a wasteful number, since it uses less digits than its factorization.

51392465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446919.

The product of its digits is 32400, while the sum is 35.

The square root of 51392465 is about 7168.8538135465. The cubic root of 51392465 is about 371.7918079093.

The spelling of 51392465 in words is "fifty-one million, three hundred ninety-two thousand, four hundred sixty-five".