1155264517 has 16 divisors (see below), whose sum is σ = 1276157952. Its totient is φ = 1037095920.

The previous prime is 1155264511. The next prime is 1155264521. The reversal of 1155264517 is 7154625511.

It is a cyclic number.

It is not a de Polignac number, because 1155264517 - 2¹⁹ = 1154740229 is a prime.

It is a super-2 number, since 2×1155264517² = 2669272208478486578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155264511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315298 + ... + 318940.

It is an arithmetic number, because the mean of its divisors is an integer number (79759872).

Almost surely, 2^1155264517 is an apocalyptic number.

It is an amenable number.

1155264517 is a deficient number, since it is larger than the sum of its proper divisors (120893435).

1155264517 is a wasteful number, since it uses less digits than its factorization.

1155264517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008.

The product of its digits is 42000, while the sum is 37.

The square root of 1155264517 is about 33989.1823526251. The cubic root of 1155264517 is about 1049.2858384823.

The spelling of 1155264517 in words is "one billion, one hundred fifty-five million, two hundred sixty-four thousand, five hundred seventeen".