56421894 has 8 divisors (see below), whose sum is σ = 112843800. Its totient is φ = 18807296.

The previous prime is 56421851. The next prime is 56421901. The reversal of 56421894 is 49812465.

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

56421894 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4701819 + ... + 4701830.

It is an arithmetic number, because the mean of its divisors is an integer number (14105475).

Almost surely, 2^56421894 is an apocalyptic number.

56421894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56421894 is a wasteful number, since it uses less digits than its factorization.

56421894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403654.

The product of its digits is 69120, while the sum is 39.

The square root of 56421894 is about 7511.4508585226. The cubic root of 56421894 is about 383.5446126197.

The spelling of 56421894 in words is "fifty-six million, four hundred twenty-one thousand, eight hundred ninety-four".