56172283897 has 2 divisors, whose sum is σ = 56172283898. Its totient is φ = 56172283896.

The previous prime is 56172283859. The next prime is 56172283933. The reversal of 56172283897 is 79838227165.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49172619001 + 6999664896 = 221749^2 + 83664^2 .

It is a cyclic number.

It is not a de Polignac number, because 56172283897 - 2²⁷ = 56038066169 is a prime.

It is a super-3 number, since 3×56172283897³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (56172283597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086141948 + 28086141949.

It is an arithmetic number, because the mean of its divisors is an integer number (28086141949).

Almost surely, 2^56172283897 is an apocalyptic number.

It is an amenable number.

56172283897 is a deficient number, since it is larger than the sum of its proper divisors (1).

56172283897 is an equidigital number, since it uses as much as digits as its factorization.

56172283897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 58.

The spelling of 56172283897 in words is "fifty-six billion, one hundred seventy-two million, two hundred eighty-three thousand, eight hundred ninety-seven".