2455563561 has 16 divisors (see below), whose sum is σ = 3620660160. Its totient is φ = 1467832320.

The previous prime is 2455563533. The next prime is 2455563581. The reversal of 2455563561 is 1653655542.

2455563561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2455563561 - 2⁵ = 2455563529 is a prime.

It is a super-2 number, since 2×2455563561² = 12059584804222001442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2455563581) 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, 507256 + ... + 512073.

It is an arithmetic number, because the mean of its divisors is an integer number (226291260).

Almost surely, 2^2455563561 is an apocalyptic number.

It is an amenable number.

2455563561 is a deficient number, since it is larger than the sum of its proper divisors (1165096599).

2455563561 is a wasteful number, since it uses less digits than its factorization.

2455563561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019416.

The product of its digits is 540000, while the sum is 42.

The square root of 2455563561 is about 49553.6432666661. The cubic root of 2455563561 is about 1349.1194186040.

The spelling of 2455563561 in words is "two billion, four hundred fifty-five million, five hundred sixty-three thousand, five hundred sixty-one".