56172007 has 2 divisors, whose sum is σ = 56172008. Its totient is φ = 56172006.

The previous prime is 56172001. The next prime is 56172019. The reversal of 56172007 is 70027165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56172007 - 2⁷ = 56171879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56172001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086003 + 28086004.

It is an arithmetic number, because the mean of its divisors is an integer number (28086004).

Almost surely, 2^56172007 is an apocalyptic number.

56172007 is a deficient number, since it is larger than the sum of its proper divisors (1).

56172007 is an equidigital number, since it uses as much as digits as its factorization.

56172007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 56172007 is about 7494.7986630729. The cubic root of 56172007 is about 382.9775475570.

The spelling of 56172007 in words is "fifty-six million, one hundred seventy-two thousand, seven".