45627581 has 2 divisors, whose sum is σ = 45627582. Its totient is φ = 45627580.

The previous prime is 45627577. The next prime is 45627611. The reversal of 45627581 is 18572654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45225625 + 401956 = 6725^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 45627581 - 2² = 45627577 is a prime.

It is a super-2 number, since 2×45627581² = 4163752295823122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen 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 (45627181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22813790 + 22813791.

It is an arithmetic number, because the mean of its divisors is an integer number (22813791).

Almost surely, 2^45627581 is an apocalyptic number.

It is an amenable number.

45627581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45627581 is an equidigital number, since it uses as much as digits as its factorization.

45627581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 45627581 is about 6754.8190945428. The cubic root of 45627581 is about 357.3352128213.

The spelling of 45627581 in words is "forty-five million, six hundred twenty-seven thousand, five hundred eighty-one".