45536581 has 2 divisors, whose sum is σ = 45536582. Its totient is φ = 45536580.

The previous prime is 45536567. The next prime is 45536587. The reversal of 45536581 is 18563554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41796225 + 3740356 = 6465^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 45536581 - 2⁷ = 45536453 is a prime.

It is a super-2 number, since 2×45536581² = 4147160418339122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45536581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45536587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22768290 + 22768291.

It is an arithmetic number, because the mean of its divisors is an integer number (22768291).

Almost surely, 2^45536581 is an apocalyptic number.

It is an amenable number.

45536581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45536581 is an equidigital number, since it uses as much as digits as its factorization.

45536581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 45536581 is about 6748.0798009508. The cubic root of 45536581 is about 357.0974973478.

The spelling of 45536581 in words is "forty-five million, five hundred thirty-six thousand, five hundred eighty-one".