56172497 has 2 divisors, whose sum is σ = 56172498. Its totient is φ = 56172496.

The previous prime is 56172461. The next prime is 56172499. The reversal of 56172497 is 79427165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50140561 + 6031936 = 7081^2 + 2456^2 .

It is a cyclic number.

It is not a de Polignac number, because 56172497 - 2⁸ = 56172241 is a prime.

Together with 56172499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56172499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086248 + 28086249.

It is an arithmetic number, because the mean of its divisors is an integer number (28086249).

Almost surely, 2^56172497 is an apocalyptic number.

It is an amenable number.

56172497 is a deficient number, since it is larger than the sum of its proper divisors (1).

56172497 is an equidigital number, since it uses as much as digits as its factorization.

56172497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 56172497 is about 7494.8313523388. The cubic root of 56172497 is about 382.9786611512.

The spelling of 56172497 in words is "fifty-six million, one hundred seventy-two thousand, four hundred ninety-seven".