45533581 has 2 divisors, whose sum is σ = 45533582. Its totient is φ = 45533580.

The previous prime is 45533533. The next prime is 45533639. The reversal of 45533581 is 18533554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23677956 + 21855625 = 4866^2 + 4675^2 .

It is a cyclic number.

It is not a de Polignac number, because 45533581 - 2²¹ = 43436429 is a prime.

It is a super-2 number, since 2×45533581² = 4146613997367122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45533281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22766790 + 22766791.

It is an arithmetic number, because the mean of its divisors is an integer number (22766791).

Almost surely, 2^45533581 is an apocalyptic number.

It is an amenable number.

45533581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45533581 is an equidigital number, since it uses as much as digits as its factorization.

45533581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 34.

The square root of 45533581 is about 6747.8575118329. The cubic root of 45533581 is about 357.0896551837.

The spelling of 45533581 in words is "forty-five million, five hundred thirty-three thousand, five hundred eighty-one".