1155522051 has 16 divisors (see below), whose sum is σ = 1712409120. Its totient is φ = 770112000.

The previous prime is 1155522029. The next prime is 1155522061. The reversal of 1155522051 is 1502255511.

It is not a de Polignac number, because 1155522051 - 2⁹ = 1155521539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1155522061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161551 + ... + 168551.

It is an arithmetic number, because the mean of its divisors is an integer number (107025570).

Almost surely, 2^1155522051 is an apocalyptic number.

1155522051 is a deficient number, since it is larger than the sum of its proper divisors (556887069).

1155522051 is an equidigital number, since it uses as much as digits as its factorization.

1155522051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13123 (or 13117 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 1155522051 is about 33992.9706115838. The cubic root of 1155522051 is about 1049.3638023592.

Adding to 1155522051 its reverse (1502255511), we get a palindrome (2657777562).

The spelling of 1155522051 in words is "one billion, one hundred fifty-five million, five hundred twenty-two thousand, fifty-one".