1155130511 has 2 divisors, whose sum is σ = 1155130512. Its totient is φ = 1155130510.

The previous prime is 1155130507. The next prime is 1155130531. The reversal of 1155130511 is 1150315511.

It is a weak prime.

It is an emirp because it is prime and its reverse (1150315511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1155130511 - 2² = 1155130507 is a prime.

It is a super-2 number, since 2×1155130511² = 2668652994886242242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155130531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577565255 + 577565256.

It is an arithmetic number, because the mean of its divisors is an integer number (577565256).

Almost surely, 2^1155130511 is an apocalyptic number.

1155130511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155130511 is an equidigital number, since it uses as much as digits as its factorization.

1155130511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375, while the sum is 23.

The square root of 1155130511 is about 33987.2109917834. The cubic root of 1155130511 is about 1049.2452659459.

The spelling of 1155130511 in words is "one billion, one hundred fifty-five million, one hundred thirty thousand, five hundred eleven".