2521955533 has 2 divisors, whose sum is σ = 2521955534. Its totient is φ = 2521955532.

The previous prime is 2521955503. The next prime is 2521955537. The reversal of 2521955533 is 3355591252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2487814884 + 34140649 = 49878^2 + 5843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2521955533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521955537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260977766 + 1260977767.

It is an arithmetic number, because the mean of its divisors is an integer number (1260977767).

Almost surely, 2^2521955533 is an apocalyptic number.

It is an amenable number.

2521955533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521955533 is an equidigital number, since it uses as much as digits as its factorization.

2521955533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 202500, while the sum is 40.

The square root of 2521955533 is about 50219.0753897361. The cubic root of 2521955533 is about 1361.1703328839.

The spelling of 2521955533 in words is "two billion, five hundred twenty-one million, nine hundred fifty-five thousand, five hundred thirty-three".