56207978 has 8 divisors (see below), whose sum is σ = 84365472. Its totient is φ = 28086156.

The previous prime is 56207971. The next prime is 56207981. The reversal of 56207978 is 87970265.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56207971) 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, 4550 + ... + 11537.

It is an arithmetic number, because the mean of its divisors is an integer number (10545684).

Almost surely, 2^56207978 is an apocalyptic number.

56207978 is a deficient number, since it is larger than the sum of its proper divisors (28157494).

56207978 is a wasteful number, since it uses less digits than its factorization.

56207978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17836.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 56207978 is about 7497.1980099234. The cubic root of 56207978 is about 383.0592795237.

The spelling of 56207978 in words is "fifty-six million, two hundred seven thousand, nine hundred seventy-eight".