7423590521 has 2 divisors, whose sum is σ = 7423590522. Its totient is φ = 7423590520.

The previous prime is 7423590509. The next prime is 7423590541. The reversal of 7423590521 is 1250953247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6502164496 + 921426025 = 80636^2 + 30355^2 .

It is an emirp because it is prime and its reverse (1250953247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7423590521 - 2⁶ = 7423590457 is a prime.

It is not a weakly prime, because it can be changed into another prime (7423590541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3711795260 + 3711795261.

It is an arithmetic number, because the mean of its divisors is an integer number (3711795261).

Almost surely, 2^7423590521 is an apocalyptic number.

It is an amenable number.

7423590521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7423590521 is an equidigital number, since it uses as much as digits as its factorization.

7423590521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 7423590521 is about 86160.2606832175. The cubic root of 7423590521 is about 1950.7637175943.

The spelling of 7423590521 in words is "seven billion, four hundred twenty-three million, five hundred ninety thousand, five hundred twenty-one".