56420073 has 6 divisors (see below), whose sum is σ = 81495674. Its totient is φ = 37613376.

The previous prime is 56420057. The next prime is 56420083. The reversal of 56420073 is 37002465.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48399849 + 8020224 = 6957^2 + 2832^2 .

It is not a de Polignac number, because 56420073 - 2⁴ = 56420057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3134440 + ... + 3134457.

Almost surely, 2^56420073 is an apocalyptic number.

It is an amenable number.

56420073 is a deficient number, since it is larger than the sum of its proper divisors (25075601).

56420073 is a wasteful number, since it uses less digits than its factorization.

56420073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268903 (or 6268900 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 56420073 is about 7511.3296426132. The cubic root of 56420073 is about 383.5404863122.

The spelling of 56420073 in words is "fifty-six million, four hundred twenty thousand, seventy-three".