56438171 has 2 divisors, whose sum is σ = 56438172. Its totient is φ = 56438170.

The previous prime is 56438167. The next prime is 56438201. The reversal of 56438171 is 17183465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56438171 - 2² = 56438167 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56438111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28219085 + 28219086.

It is an arithmetic number, because the mean of its divisors is an integer number (28219086).

Almost surely, 2^56438171 is an apocalyptic number.

56438171 is a deficient number, since it is larger than the sum of its proper divisors (1).

56438171 is an equidigital number, since it uses as much as digits as its factorization.

56438171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 56438171 is about 7512.5342594893. The cubic root of 56438171 is about 383.5814916571.

The spelling of 56438171 in words is "fifty-six million, four hundred thirty-eight thousand, one hundred seventy-one".