55717369 has 2 divisors, whose sum is σ = 55717370. Its totient is φ = 55717368.

The previous prime is 55717331. The next prime is 55717373. The reversal of 55717369 is 96371755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55056400 + 660969 = 7420^2 + 813^2 .

It is a cyclic number.

It is not a de Polignac number, because 55717369 - 2⁷ = 55717241 is a prime.

It is a super-2 number, since 2×55717369² = 6208850416564322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55717069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27858684 + 27858685.

It is an arithmetic number, because the mean of its divisors is an integer number (27858685).

Almost surely, 2^55717369 is an apocalyptic number.

It is an amenable number.

55717369 is a deficient number, since it is larger than the sum of its proper divisors (1).

55717369 is an equidigital number, since it uses as much as digits as its factorization.

55717369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198450, while the sum is 43.

The square root of 55717369 is about 7464.4068083137. The cubic root of 55717369 is about 381.9415154015.

The spelling of 55717369 in words is "fifty-five million, seven hundred seventeen thousand, three hundred sixty-nine".