56905387 has 8 divisors (see below), whose sum is σ = 70947072. Its totient is φ = 44341800.

The previous prime is 56905369. The next prime is 56905421. The reversal of 56905387 is 78350965.

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 56905387 - 2¹¹ = 56903339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56905327) 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, 369439 + ... + 369592.

It is an arithmetic number, because the mean of its divisors is an integer number (8868384).

Almost surely, 2^56905387 is an apocalyptic number.

56905387 is a deficient number, since it is larger than the sum of its proper divisors (14041685).

56905387 is a wasteful number, since it uses less digits than its factorization.

56905387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739049.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 56905387 is about 7543.5659339599. The cubic root of 56905387 is about 384.6370605620.

The spelling of 56905387 in words is "fifty-six million, nine hundred five thousand, three hundred eighty-seven".