56421796 has 12 divisors (see below), whose sum is σ = 99756748. Its totient is φ = 27919872.

The previous prime is 56421787. The next prime is 56421797. The reversal of 56421796 is 69712465.

It can be written as a sum of positive squares in 2 ways, for example, as 45292900 + 11128896 = 6730^2 + 3336^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56421797) 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, 72321 + ... + 73096.

Almost surely, 2^56421796 is an apocalyptic number.

It is an amenable number.

56421796 is a deficient number, since it is larger than the sum of its proper divisors (43334952).

56421796 is a wasteful number, since it uses less digits than its factorization.

56421796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145518 (or 145516 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 56421796 is about 7511.4443351462. Note that the first 3 decimals coincide. The cubic root of 56421796 is about 383.5443905582.

The spelling of 56421796 in words is "fifty-six million, four hundred twenty-one thousand, seven hundred ninety-six".