56198015 has 4 divisors (see below), whose sum is σ = 67437624. Its totient is φ = 44958408.

The previous prime is 56197979. The next prime is 56198047. The reversal of 56198015 is 51089165.

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 56198015 - 2¹⁰ = 56196991 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, 5619797 + ... + 5619806.

It is an arithmetic number, because the mean of its divisors is an integer number (16859406).

Almost surely, 2^56198015 is an apocalyptic number.

56198015 is a deficient number, since it is larger than the sum of its proper divisors (11239609).

56198015 is a wasteful number, since it uses less digits than its factorization.

56198015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11239608.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 56198015 is about 7496.5335322401. The cubic root of 56198015 is about 383.0366454585.

The spelling of 56198015 in words is "fifty-six million, one hundred ninety-eight thousand, fifteen".