56409787 has 8 divisors (see below), whose sum is σ = 64519136. Its totient is φ = 48313152.

The previous prime is 56409767. The next prime is 56409817. The reversal of 56409787 is 78790465.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56409787 - 2⁷ = 56409659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56409737) 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, 9973 + ... + 14569.

It is an arithmetic number, because the mean of its divisors is an integer number (8064892).

Almost surely, 2^56409787 is an apocalyptic number.

56409787 is a deficient number, since it is larger than the sum of its proper divisors (8109349).

56409787 is a wasteful number, since it uses less digits than its factorization.

56409787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 56409787 is about 7510.6449123893. The cubic root of 56409787 is about 383.5171770123.

The spelling of 56409787 in words is "fifty-six million, four hundred nine thousand, seven hundred eighty-seven".