53015013 has 16 divisors (see below), whose sum is σ = 80213760. Its totient is φ = 34590528.

The previous prime is 53015003. The next prime is 53015029. The reversal of 53015013 is 31051035.

It is a happy number.

It is not a de Polignac number, because 53015013 - 2²¹ = 50917861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53015003) 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, 19620 + ... + 22157.

It is an arithmetic number, because the mean of its divisors is an integer number (5013360).

Almost surely, 2^53015013 is an apocalyptic number.

It is an amenable number.

53015013 is a deficient number, since it is larger than the sum of its proper divisors (27198747).

53015013 is a wasteful number, since it uses less digits than its factorization.

53015013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41833 (or 41827 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 53015013 is about 7281.1409133459. The cubic root of 53015013 is about 375.6640394436.

Adding to 53015013 its reverse (31051035), we get a palindrome (84066048).

The spelling of 53015013 in words is "fifty-three million, fifteen thousand, thirteen".