51323065 has 4 divisors (see below), whose sum is σ = 61587684. Its totient is φ = 41058448.

The previous prime is 51323029. The next prime is 51323071. The reversal of 51323065 is 56032315.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18386944 + 32936121 = 4288^2 + 5739^2 .

It is a cyclic number.

It is not a de Polignac number, because 51323065 - 2¹⁵ = 51290297 is a prime.

It is a Duffinian 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, 5132302 + ... + 5132311.

It is an arithmetic number, because the mean of its divisors is an integer number (15396921).

Almost surely, 2^51323065 is an apocalyptic number.

It is an amenable number.

51323065 is a deficient number, since it is larger than the sum of its proper divisors (10264619).

51323065 is a wasteful number, since it uses less digits than its factorization.

51323065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10264618.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 51323065 is about 7164.0117950768. The cubic root of 51323065 is about 371.6243775631.

The spelling of 51323065 in words is "fifty-one million, three hundred twenty-three thousand, sixty-five".