1156275897 has 16 divisors (see below), whose sum is σ = 1767693312. Its totient is φ = 658573200.

The previous prime is 1156275877. The next prime is 1156275899. The reversal of 1156275897 is 7985726511.

It is not a de Polignac number, because 1156275897 - 2⁶ = 1156275833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1156275899) 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, 83229 + ... + 96122.

It is an arithmetic number, because the mean of its divisors is an integer number (110480832).

Almost surely, 2^1156275897 is an apocalyptic number.

It is an amenable number.

1156275897 is a deficient number, since it is larger than the sum of its proper divisors (611417415).

1156275897 is a wasteful number, since it uses less digits than its factorization.

1156275897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179668.

The product of its digits is 1058400, while the sum is 51.

The square root of 1156275897 is about 34004.0570667678. The cubic root of 1156275897 is about 1049.5919493806.

The spelling of 1156275897 in words is "one billion, one hundred fifty-six million, two hundred seventy-five thousand, eight hundred ninety-seven".