51715265 has 16 divisors (see below), whose sum is σ = 73370880. Its totient is φ = 34238400.

The previous prime is 51715249. The next prime is 51715267. The reversal of 51715265 is 56251715.

It is not a de Polignac number, because 51715265 - 2⁴ = 51715249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51715267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24461 + ... + 26490.

It is an arithmetic number, because the mean of its divisors is an integer number (4585680).

Almost surely, 2^51715265 is an apocalyptic number.

It is an amenable number.

51715265 is a deficient number, since it is larger than the sum of its proper divisors (21655615).

51715265 is a wasteful number, since it uses less digits than its factorization.

51715265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50992.

The product of its digits is 10500, while the sum is 32.

The square root of 51715265 is about 7191.3326303266. The cubic root of 51715265 is about 372.5686013917.

The spelling of 51715265 in words is "fifty-one million, seven hundred fifteen thousand, two hundred sixty-five".