53864015 has 4 divisors (see below), whose sum is σ = 64636824. Its totient is φ = 43091208.

The previous prime is 53863987. The next prime is 53864023. The reversal of 53864015 is 51046835.

It is a happy number.

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 53864015 - 2⁶ = 53863951 is a prime.

It is a super-2 number, since 2×53864015² = 5802664223840450, which contains 22 as substring.

It is a Duffinian number.

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, 5386397 + ... + 5386406.

It is an arithmetic number, because the mean of its divisors is an integer number (16159206).

Almost surely, 2^53864015 is an apocalyptic number.

53864015 is a deficient number, since it is larger than the sum of its proper divisors (10772809).

53864015 is a wasteful number, since it uses less digits than its factorization.

53864015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772808.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 53864015 is about 7339.2107886339. The cubic root of 53864015 is about 377.6587698156.

The spelling of 53864015 in words is "fifty-three million, eight hundred sixty-four thousand, fifteen".