1561160275 has 6 divisors (see below), whose sum is σ = 1935838772. Its totient is φ = 1248928200.

The previous prime is 1561160273. The next prime is 1561160311. The reversal of 1561160275 is 5720611651.

It is not a de Polignac number, because 1561160275 - 2¹ = 1561160273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1561160275.

It is not an unprimeable number, because it can be changed into a prime (1561160273) 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, 31223181 + ... + 31223230.

Almost surely, 2^1561160275 is an apocalyptic number.

1561160275 is a deficient number, since it is larger than the sum of its proper divisors (374678497).

1561160275 is an equidigital number, since it uses as much as digits as its factorization.

1561160275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62446421 (or 62446416 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1561160275 is about 39511.5207882461. The cubic root of 1561160275 is about 1160.0654627642.

The spelling of 1561160275 in words is "one billion, five hundred sixty-one million, one hundred sixty thousand, two hundred seventy-five".