51264965 has 8 divisors (see below), whose sum is σ = 63018648. Its totient is φ = 40011520.

The previous prime is 51264937. The next prime is 51264971. The reversal of 51264965 is 56946215.

It can be written as a sum of positive squares in 4 ways, for example, as 128164 + 51136801 = 358^2 + 7151^2 .

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

It is not a de Polignac number, because 51264965 - 2⁸ = 51264709 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 7 ways as a sum of consecutive naturals, for example, 124832 + ... + 125241.

It is an arithmetic number, because the mean of its divisors is an integer number (7877331).

Almost surely, 2^51264965 is an apocalyptic number.

It is an amenable number.

51264965 is a deficient number, since it is larger than the sum of its proper divisors (11753683).

51264965 is a wasteful number, since it uses less digits than its factorization.

51264965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250119.

The product of its digits is 64800, while the sum is 38.

The square root of 51264965 is about 7159.9556562873. The cubic root of 51264965 is about 371.4840928202.

The spelling of 51264965 in words is "fifty-one million, two hundred sixty-four thousand, nine hundred sixty-five".