5322587691581 has 2 divisors, whose sum is σ = 5322587691582. Its totient is φ = 5322587691580.

The previous prime is 5322587691413. The next prime is 5322587691587. The reversal of 5322587691581 is 1851967852235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5320708035556 + 1879656025 = 2306666^2 + 43355^2 .

It is a cyclic number.

It is not a de Polignac number, because 5322587691581 - 2¹⁸ = 5322587429437 is a prime.

It is a super-2 number, since 2×5322587691581² (a number of 26 digits) contains 22 as substring.

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 (5322587691587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2661293845790 + 2661293845791.

It is an arithmetic number, because the mean of its divisors is an integer number (2661293845791).

Almost surely, 2^{5322587691581} is an apocalyptic number.

It is an amenable number.

5322587691581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5322587691581 is an equidigital number, since it uses as much as digits as its factorization.

5322587691581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288000, while the sum is 62.

The spelling of 5322587691581 in words is "five trillion, three hundred twenty-two billion, five hundred eighty-seven million, six hundred ninety-one thousand, five hundred eighty-one".