51365523 has 16 divisors (see below), whose sum is σ = 74835072. Its totient is φ = 31080000.

The previous prime is 51365513. The next prime is 51365539. The reversal of 51365523 is 32556315.

It is not a de Polignac number, because 51365523 - 2⁹ = 51365011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51365513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33943 + ... + 35423.

It is an arithmetic number, because the mean of its divisors is an integer number (4677192).

Almost surely, 2^51365523 is an apocalyptic number.

51365523 is a deficient number, since it is larger than the sum of its proper divisors (23469549).

51365523 is a wasteful number, since it uses less digits than its factorization.

51365523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546.

The product of its digits is 13500, while the sum is 30.

The square root of 51365523 is about 7166.9744662584. The cubic root of 51365523 is about 371.7268271396.

The spelling of 51365523 in words is "fifty-one million, three hundred sixty-five thousand, five hundred twenty-three".