56061787 has 4 divisors (see below), whose sum is σ = 58499280. Its totient is φ = 53624296.

The previous prime is 56061773. The next prime is 56061839. The reversal of 56061787 is 78716065.

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 56061787 - 2⁷ = 56061659 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56061287) 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, 1218712 + ... + 1218757.

It is an arithmetic number, because the mean of its divisors is an integer number (14624820).

Almost surely, 2^56061787 is an apocalyptic number.

56061787 is a deficient number, since it is larger than the sum of its proper divisors (2437493).

56061787 is a wasteful number, since it uses less digits than its factorization.

56061787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437492.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 56061787 is about 7487.4419530304. The cubic root of 56061787 is about 382.7268923118.

The spelling of 56061787 in words is "fifty-six million, sixty-one thousand, seven hundred eighty-seven".