5615655557 has 2 divisors, whose sum is σ = 5615655558. Its totient is φ = 5615655556.

The previous prime is 5615655553. The next prime is 5615655631. The reversal of 5615655557 is 7555565165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5607164161 + 8491396 = 74881^2 + 2914^2 .

It is a cyclic number.

It is not a de Polignac number, because 5615655557 - 2² = 5615655553 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5615655553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2807827778 + 2807827779.

It is an arithmetic number, because the mean of its divisors is an integer number (2807827779).

Almost surely, 2^5615655557 is an apocalyptic number.

It is an amenable number.

5615655557 is a deficient number, since it is larger than the sum of its proper divisors (1).

5615655557 is an equidigital number, since it uses as much as digits as its factorization.

5615655557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3937500, while the sum is 50.

The square root of 5615655557 is about 74937.6778196389. The cubic root of 5615655557 is about 1777.4613008772.

The spelling of 5615655557 in words is "five billion, six hundred fifteen million, six hundred fifty-five thousand, five hundred fifty-seven".