5115255491 has 2 divisors, whose sum is σ = 5115255492. Its totient is φ = 5115255490.

The previous prime is 5115255479. The next prime is 5115255527. The reversal of 5115255491 is 1945525115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5115255491 - 2⁶ = 5115255427 is a prime.

It is not a weakly prime, because it can be changed into another prime (5115252491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557627745 + 2557627746.

It is an arithmetic number, because the mean of its divisors is an integer number (2557627746).

Almost surely, 2^5115255491 is an apocalyptic number.

5115255491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115255491 is an equidigital number, since it uses as much as digits as its factorization.

5115255491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45000, while the sum is 38.

The square root of 5115255491 is about 71521.0143314537. The cubic root of 5115255491 is about 1723.0152054751.

The spelling of 5115255491 in words is "five billion, one hundred fifteen million, two hundred fifty-five thousand, four hundred ninety-one".