56117549 has 2 divisors, whose sum is σ = 56117550. Its totient is φ = 56117548.

The previous prime is 56117531. The next prime is 56117563. The reversal of 56117549 is 94571165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47748100 + 8369449 = 6910^2 + 2893^2 .

It is a cyclic number.

It is not a de Polignac number, because 56117549 - 2⁸ = 56117293 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56117569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28058774 + 28058775.

It is an arithmetic number, because the mean of its divisors is an integer number (28058775).

Almost surely, 2^56117549 is an apocalyptic number.

It is an amenable number.

56117549 is a deficient number, since it is larger than the sum of its proper divisors (1).

56117549 is an equidigital number, since it uses as much as digits as its factorization.

56117549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 38.

The square root of 56117549 is about 7491.1647291993. The cubic root of 56117549 is about 382.8537436912.

The spelling of 56117549 in words is "fifty-six million, one hundred seventeen thousand, five hundred forty-nine".