56198787 has 8 divisors (see below), whose sum is σ = 79339536. Its totient is φ = 35261952.

The previous prime is 56198773. The next prime is 56198797. The reversal of 56198787 is 78789165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56198787 - 2⁴ = 56198771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 1101937 = 56198787 / (5 + 6 + 1 + 9 + 8 + 7 + 8 + 7).

It is not an unprimeable number, because it can be changed into a prime (56198717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550918 + ... + 551019.

It is an arithmetic number, because the mean of its divisors is an integer number (9917442).

Almost surely, 2^56198787 is an apocalyptic number.

56198787 is a deficient number, since it is larger than the sum of its proper divisors (23140749).

56198787 is a wasteful number, since it uses less digits than its factorization.

56198787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101957.

The product of its digits is 846720, while the sum is 51.

The square root of 56198787 is about 7496.5850225286. The cubic root of 56198787 is about 383.0383993931.

The spelling of 56198787 in words is "fifty-six million, one hundred ninety-eight thousand, seven hundred eighty-seven".