56642845 has 8 divisors (see below), whose sum is σ = 77681664. Its totient is φ = 38840784.

The previous prime is 56642843. The next prime is 56642851. The reversal of 56642845 is 54824665.

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 56642845 - 2¹ = 56642843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56642798 and 56642807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56642843) 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, 809149 + ... + 809218.

It is an arithmetic number, because the mean of its divisors is an integer number (9710208).

Almost surely, 2^56642845 is an apocalyptic number.

It is an amenable number.

56642845 is a deficient number, since it is larger than the sum of its proper divisors (21038819).

56642845 is a wasteful number, since it uses less digits than its factorization.

56642845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618379.

The product of its digits is 230400, while the sum is 40.

The square root of 56642845 is about 7526.1440990722. The cubic root of 56642845 is about 384.0446205564.

The spelling of 56642845 in words is "fifty-six million, six hundred forty-two thousand, eight hundred forty-five".