5115551011 has 2 divisors, whose sum is σ = 5115551012. Its totient is φ = 5115551010.

The previous prime is 5115550907. The next prime is 5115551033. The reversal of 5115551011 is 1101555115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5115551011 - 2¹⁹ = 5115026723 is a prime.

It is a super-2 number, since 2×5115551011² = 52337724292286244242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5115551041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557775505 + 2557775506.

It is an arithmetic number, because the mean of its divisors is an integer number (2557775506).

Almost surely, 2^5115551011 is an apocalyptic number.

5115551011 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115551011 is an equidigital number, since it uses as much as digits as its factorization.

5115551011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 625, while the sum is 25.

The square root of 5115551011 is about 71523.0802678408. The cubic root of 5115551011 is about 1723.0483856782.

The spelling of 5115551011 in words is "five billion, one hundred fifteen million, five hundred fifty-one thousand, eleven".