1151160561 has 6 divisors (see below), whose sum is σ = 1662787490. Its totient is φ = 767440368.

The previous prime is 1151160533. The next prime is 1151160601. The reversal of 1151160561 is 1650611511.

1151160561 is a `hidden beast` number, since 1 + 1 + 51 + 1 + 605 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 978500961 + 172659600 = 31281^2 + 13140^2 .

It is not a de Polignac number, because 1151160561 - 2⁶ = 1151160497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151160061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63953356 + ... + 63953373.

Almost surely, 2^1151160561 is an apocalyptic number.

It is an amenable number.

1151160561 is a deficient number, since it is larger than the sum of its proper divisors (511626929).

1151160561 is a wasteful number, since it uses less digits than its factorization.

1151160561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127906735 (or 127906732 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 1151160561 is about 33928.7571390406. The cubic root of 1151160561 is about 1048.0418716760.

The spelling of 1151160561 in words is "one billion, one hundred fifty-one million, one hundred sixty thousand, five hundred sixty-one".