56201615 has 4 divisors (see below), whose sum is σ = 67441944. Its totient is φ = 44961288.

The previous prime is 56201603. The next prime is 56201617. The reversal of 56201615 is 51610265.

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 56201615 - 2¹⁴ = 56185231 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 (56201617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5620157 + ... + 5620166.

It is an arithmetic number, because the mean of its divisors is an integer number (16860486).

Almost surely, 2^56201615 is an apocalyptic number.

56201615 is a deficient number, since it is larger than the sum of its proper divisors (11240329).

56201615 is a wasteful number, since it uses less digits than its factorization.

56201615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11240328.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 56201615 is about 7496.7736393731. The cubic root of 56201615 is about 383.0448242911.

The spelling of 56201615 in words is "fifty-six million, two hundred one thousand, six hundred fifteen".