56172349 has 2 divisors, whose sum is σ = 56172350. Its totient is φ = 56172348.

The previous prime is 56172343. The next prime is 56172353. The reversal of 56172349 is 94327165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 15760900 = 6357^2 + 3970^2 .

It is a cyclic number.

It is not a de Polignac number, because 56172349 - 2¹⁷ = 56041277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56172343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086174 + 28086175.

It is an arithmetic number, because the mean of its divisors is an integer number (28086175).

Almost surely, 2^56172349 is an apocalyptic number.

It is an amenable number.

56172349 is a deficient number, since it is larger than the sum of its proper divisors (1).

56172349 is an equidigital number, since it uses as much as digits as its factorization.

56172349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 56172349 is about 7494.8214788613. The cubic root of 56172349 is about 382.9783248010.

The spelling of 56172349 in words is "fifty-six million, one hundred seventy-two thousand, three hundred forty-nine".