2521373489 has 2 divisors, whose sum is σ = 2521373490. Its totient is φ = 2521373488.

The previous prime is 2521373483. The next prime is 2521373527. The reversal of 2521373489 is 9843731252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1475174464 + 1046199025 = 38408^2 + 32345^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521373489 - 2²⁴ = 2504596273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521373483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260686744 + 1260686745.

It is an arithmetic number, because the mean of its divisors is an integer number (1260686745).

Almost surely, 2^2521373489 is an apocalyptic number.

It is an amenable number.

2521373489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521373489 is an equidigital number, since it uses as much as digits as its factorization.

2521373489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 2521373489 is about 50213.2800063887. The cubic root of 2521373489 is about 1361.0656096548.

The spelling of 2521373489 in words is "two billion, five hundred twenty-one million, three hundred seventy-three thousand, four hundred eighty-nine".