2533508921 has 2 divisors, whose sum is σ = 2533508922. Its totient is φ = 2533508920.

The previous prime is 2533508897. The next prime is 2533508969. The reversal of 2533508921 is 1298053352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1917476521 + 616032400 = 43789^2 + 24820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2533508921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2533501921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266754460 + 1266754461.

It is an arithmetic number, because the mean of its divisors is an integer number (1266754461).

Almost surely, 2^2533508921 is an apocalyptic number.

It is an amenable number.

2533508921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2533508921 is an equidigital number, since it uses as much as digits as its factorization.

2533508921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 2533508921 is about 50333.9738248432. The cubic root of 2533508921 is about 1363.2457297039.

The spelling of 2533508921 in words is "two billion, five hundred thirty-three million, five hundred eight thousand, nine hundred twenty-one".