56115869 has 2 divisors, whose sum is σ = 56115870. Its totient is φ = 56115868.

The previous prime is 56115823. The next prime is 56115881. The reversal of 56115869 is 96851165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53436100 + 2679769 = 7310^2 + 1637^2 .

It is a cyclic number.

It is not a de Polignac number, because 56115869 - 2⁸ = 56115613 is a prime.

It is a super-2 number, since 2×56115869² = 6297981507250322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56115809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28057934 + 28057935.

It is an arithmetic number, because the mean of its divisors is an integer number (28057935).

Almost surely, 2^56115869 is an apocalyptic number.

It is an amenable number.

56115869 is a deficient number, since it is larger than the sum of its proper divisors (1).

56115869 is an equidigital number, since it uses as much as digits as its factorization.

56115869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 41.

The square root of 56115869 is about 7491.0525962644. The cubic root of 56115869 is about 382.8499231353.

The spelling of 56115869 in words is "fifty-six million, one hundred fifteen thousand, eight hundred sixty-nine".