5115509957 has 2 divisors, whose sum is σ = 5115509958. Its totient is φ = 5115509956.

The previous prime is 5115509951. The next prime is 5115510041. The reversal of 5115509957 is 7599055115.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4983512836 + 131997121 = 70594^2 + 11489^2 .

It is a cyclic number.

It is not a de Polignac number, because 5115509957 - 2⁴ = 5115509941 is a prime.

It is a super-2 number, since 2×5115509957² = 52336884240332283698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5115509951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557754978 + 2557754979.

It is an arithmetic number, because the mean of its divisors is an integer number (2557754979).

Almost surely, 2^5115509957 is an apocalyptic number.

It is an amenable number.

5115509957 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115509957 is an equidigital number, since it uses as much as digits as its factorization.

5115509957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 354375, while the sum is 47.

The square root of 5115509957 is about 71522.7932689992. The cubic root of 5115509957 is about 1723.0437763202.

The spelling of 5115509957 in words is "five billion, one hundred fifteen million, five hundred nine thousand, nine hundred fifty-seven".