1156552269 has 4 divisors (see below), whose sum is σ = 1542069696. Its totient is φ = 771034844.

The previous prime is 1156552261. The next prime is 1156552303. The reversal of 1156552269 is 9622556511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9622556511 = 3 ⋅3207518837.

It is a cyclic number.

It is not a de Polignac number, because 1156552269 - 2³ = 1156552261 is a prime.

It is a super-2 number, since 2×1156552269² = 2675226301858096722, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156552269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156552261) 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 3 ways as a sum of consecutive naturals, for example, 192758709 + ... + 192758714.

It is an arithmetic number, because the mean of its divisors is an integer number (385517424).

Almost surely, 2^1156552269 is an apocalyptic number.

It is an amenable number.

1156552269 is a deficient number, since it is larger than the sum of its proper divisors (385517427).

1156552269 is an equidigital number, since it uses as much as digits as its factorization.

1156552269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385517426.

The product of its digits is 162000, while the sum is 42.

The square root of 1156552269 is about 34008.1206331664. The cubic root of 1156552269 is about 1049.6755668859.

The spelling of 1156552269 in words is "one billion, one hundred fifty-six million, five hundred fifty-two thousand, two hundred sixty-nine".