53501513 has 6 divisors (see below), whose sum is σ = 57933774. Its totient is φ = 49385856.

The previous prime is 53501479. The next prime is 53501527. The reversal of 53501513 is 31510535.

It can be written as a sum of positive squares in 3 ways, for example, as 4108729 + 49392784 = 2027^2 + 7028^2 .

It is a de Polignac number, because none of the positive numbers 2^k-53501513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53501563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158120 + ... + 158457.

It is an arithmetic number, because the mean of its divisors is an integer number (9655629).

Almost surely, 2^53501513 is an apocalyptic number.

It is an amenable number.

53501513 is a deficient number, since it is larger than the sum of its proper divisors (4432261).

53501513 is a wasteful number, since it uses less digits than its factorization.

53501513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316603 (or 316590 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 53501513 is about 7314.4728449834. The cubic root of 53501513 is about 376.8096542086.

The spelling of 53501513 in words is "fifty-three million, five hundred one thousand, five hundred thirteen".