53764515 has 72 divisors (see below), whose sum is σ = 111505680. Its totient is φ = 23877504.

The previous prime is 53764511. The next prime is 53764531. The reversal of 53764515 is 51546735.

53764515 is a `hidden beast` number, since 5 + 3 + 7 + 645 + 1 + 5 = 666.

It is not a de Polignac number, because 53764515 - 2² = 53764511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53764515.

It is not an unprimeable number, because it can be changed into a prime (53764511) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81256 + ... + 81914.

It is an arithmetic number, because the mean of its divisors is an integer number (1548690).

Almost surely, 2^53764515 is an apocalyptic number.

53764515 is an abundant number, since it is smaller than the sum of its proper divisors (57741165).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53764515 is a wasteful number, since it uses less digits than its factorization.

53764515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 711 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 53764515 is about 7332.4289972696. The cubic root of 53764515 is about 377.4260837984.

The spelling of 53764515 in words is "fifty-three million, seven hundred sixty-four thousand, five hundred fifteen".