53875015 has 4 divisors (see below), whose sum is σ = 64650024. Its totient is φ = 43100008.

The previous prime is 53874991. The next prime is 53875037. The reversal of 53875015 is 51057835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53875015 - 2⁹ = 53874503 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5387497 + ... + 5387506.

It is an arithmetic number, because the mean of its divisors is an integer number (16162506).

Almost surely, 2^53875015 is an apocalyptic number.

53875015 is a deficient number, since it is larger than the sum of its proper divisors (10775009).

53875015 is a wasteful number, since it uses less digits than its factorization.

53875015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10775008.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 53875015 is about 7339.9601497556. The cubic root of 53875015 is about 377.6844763020.

The spelling of 53875015 in words is "fifty-three million, eight hundred seventy-five thousand, fifteen".