2533756961 has 4 divisors (see below), whose sum is σ = 2534073024. Its totient is φ = 2533440900.

The previous prime is 2533756919. The next prime is 2533756963. The reversal of 2533756961 is 1696573352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2533756961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2533756963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145685 + ... + 162146.

It is an arithmetic number, because the mean of its divisors is an integer number (633518256).

Almost surely, 2^2533756961 is an apocalyptic number.

It is an amenable number.

2533756961 is a deficient number, since it is larger than the sum of its proper divisors (316063).

2533756961 is an equidigital number, since it uses as much as digits as its factorization.

2533756961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316062.

The product of its digits is 1020600, while the sum is 47.

The square root of 2533756961 is about 50336.4377066951. The cubic root of 2533756961 is about 1363.2902172041.

The spelling of 2533756961 in words is "two billion, five hundred thirty-three million, seven hundred fifty-six thousand, nine hundred sixty-one".