2533609961 has 2 divisors, whose sum is σ = 2533609962. Its totient is φ = 2533609960.

The previous prime is 2533609931. The next prime is 2533609973. The reversal of 2533609961 is 1699063352.

2533609961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1319505625 + 1214104336 = 36325^2 + 34844^2 .

It is a cyclic number.

It is not a de Polignac number, because 2533609961 - 2²⁶ = 2466501097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2533609901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266804980 + 1266804981.

It is an arithmetic number, because the mean of its divisors is an integer number (1266804981).

Almost surely, 2^2533609961 is an apocalyptic number.

It is an amenable number.

2533609961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2533609961 is an equidigital number, since it uses as much as digits as its factorization.

2533609961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 2533609961 is about 50334.9775106734. The cubic root of 2533609961 is about 1363.2638522001.

The spelling of 2533609961 in words is "two billion, five hundred thirty-three million, six hundred nine thousand, nine hundred sixty-one".