2563559161 has 2 divisors, whose sum is σ = 2563559162. Its totient is φ = 2563559160.

The previous prime is 2563559101. The next prime is 2563559189. The reversal of 2563559161 is 1619553652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2340624400 + 222934761 = 48380^2 + 14931^2 .

It is a cyclic number.

It is not a de Polignac number, because 2563559161 - 2¹⁵ = 2563526393 is a prime.

It is a super-3 number, since 3×2563559161³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2563559101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281779580 + 1281779581.

It is an arithmetic number, because the mean of its divisors is an integer number (1281779581).

Almost surely, 2^2563559161 is an apocalyptic number.

It is an amenable number.

2563559161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563559161 is an equidigital number, since it uses as much as digits as its factorization.

2563559161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 43.

The square root of 2563559161 is about 50631.6023941570. The cubic root of 2563559161 is about 1368.6144304028.

The spelling of 2563559161 in words is "two billion, five hundred sixty-three million, five hundred fifty-nine thousand, one hundred sixty-one".