581122541 has 2 divisors, whose sum is σ = 581122542. Its totient is φ = 581122540.

The previous prime is 581122519. The next prime is 581122579. The reversal of 581122541 is 145221185.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 485982025 + 95140516 = 22045^2 + 9754^2 .

It is a cyclic number.

It is not a de Polignac number, because 581122541 - 2²⁶ = 514013677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (581125541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290561270 + 290561271.

It is an arithmetic number, because the mean of its divisors is an integer number (290561271).

Almost surely, 2^581122541 is an apocalyptic number.

It is an amenable number.

581122541 is a deficient number, since it is larger than the sum of its proper divisors (1).

581122541 is an equidigital number, since it uses as much as digits as its factorization.

581122541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 29.

The square root of 581122541 is about 24106.4833810326. The cubic root of 581122541 is about 834.4927613594.

The spelling of 581122541 in words is "five hundred eighty-one million, one hundred twenty-two thousand, five hundred forty-one".