57262605617621 has 2 divisors, whose sum is σ = 57262605617622. Its totient is φ = 57262605617620.

The previous prime is 57262605617543. The next prime is 57262605617627. The reversal of 57262605617621 is 12671650626275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29254695555121 + 28007910062500 = 5408761^2 + 5292250^2 .

It is a cyclic number.

It is not a de Polignac number, because 57262605617621 - 2³⁸ = 56987727710677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57262605617627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28631302808810 + 28631302808811.

It is an arithmetic number, because the mean of its divisors is an integer number (28631302808811).

Almost surely, 2^{57262605617621} is an apocalyptic number.

It is an amenable number.

57262605617621 is a deficient number, since it is larger than the sum of its proper divisors (1).

57262605617621 is an equidigital number, since it uses as much as digits as its factorization.

57262605617621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 57262605617621 in words is "fifty-seven trillion, two hundred sixty-two billion, six hundred five million, six hundred seventeen thousand, six hundred twenty-one".