56506407 has 4 divisors (see below), whose sum is σ = 75341880. Its totient is φ = 37670936.

The previous prime is 56506391. The next prime is 56506447. The reversal of 56506407 is 70460565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56506407 - 2⁴ = 56506391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56506447) 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, 9417732 + ... + 9417737.

It is an arithmetic number, because the mean of its divisors is an integer number (18835470).

Almost surely, 2^56506407 is an apocalyptic number.

56506407 is a deficient number, since it is larger than the sum of its proper divisors (18835473).

56506407 is a wasteful number, since it uses less digits than its factorization.

56506407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18835472.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 56506407 is about 7517.0743644053. The cubic root of 56506407 is about 383.7360178391.

The spelling of 56506407 in words is "fifty-six million, five hundred six thousand, four hundred seven".