56102015 has 4 divisors (see below), whose sum is σ = 67322424. Its totient is φ = 44881608.

The previous prime is 56102009. The next prime is 56102029. The reversal of 56102015 is 51020165.

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 56102015 - 2¹⁸ = 55839871 is a prime.

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, 5610197 + ... + 5610206.

It is an arithmetic number, because the mean of its divisors is an integer number (16830606).

Almost surely, 2^56102015 is an apocalyptic number.

56102015 is a deficient number, since it is larger than the sum of its proper divisors (11220409).

56102015 is a wasteful number, since it uses less digits than its factorization.

56102015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11220408.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 56102015 is about 7490.1278360252. The cubic root of 56102015 is about 382.8184142860.

The spelling of 56102015 in words is "fifty-six million, one hundred two thousand, fifteen".