45375581 has 2 divisors, whose sum is σ = 45375582. Its totient is φ = 45375580.

The previous prime is 45375571. The next prime is 45375593. The reversal of 45375581 is 18557354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 12313081 = 5750^2 + 3509^2 .

It is a cyclic number.

It is not a de Polignac number, because 45375581 - 2¹⁸ = 45113437 is a prime.

It is a super-2 number, since 2×45375581² = 4117886702175122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45375511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22687790 + 22687791.

It is an arithmetic number, because the mean of its divisors is an integer number (22687791).

Almost surely, 2^45375581 is an apocalyptic number.

It is an amenable number.

45375581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45375581 is an equidigital number, since it uses as much as digits as its factorization.

45375581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 38.

The square root of 45375581 is about 6736.1399183806. The cubic root of 45375581 is about 356.6761468157.

The spelling of 45375581 in words is "forty-five million, three hundred seventy-five thousand, five hundred eighty-one".