2590908721 has 2 divisors, whose sum is σ = 2590908722. Its totient is φ = 2590908720.

The previous prime is 2590908689. The next prime is 2590908767. The reversal of 2590908721 is 1278090952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1992372496 + 598536225 = 44636^2 + 24465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2590908721 - 2⁵ = 2590908689 is a prime.

It is not a weakly prime, because it can be changed into another prime (2590908781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295454360 + 1295454361.

It is an arithmetic number, because the mean of its divisors is an integer number (1295454361).

Almost surely, 2^2590908721 is an apocalyptic number.

It is an amenable number.

2590908721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2590908721 is an equidigital number, since it uses as much as digits as its factorization.

2590908721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 2590908721 is about 50900.9697451827. The cubic root of 2590908721 is about 1373.4642858221.

The spelling of 2590908721 in words is "two billion, five hundred ninety million, nine hundred eight thousand, seven hundred twenty-one".