45861181 has 2 divisors, whose sum is σ = 45861182. Its totient is φ = 45861180.

The previous prime is 45861139. The next prime is 45861197. The reversal of 45861181 is 18116854.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30580900 + 15280281 = 5530^2 + 3909^2 .

It is a cyclic number.

It is not a de Polignac number, because 45861181 - 2¹⁷ = 45730109 is a prime.

It is a super-2 number, since 2×45861181² = 4206495845429522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45861131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22930590 + 22930591.

It is an arithmetic number, because the mean of its divisors is an integer number (22930591).

Almost surely, 2^45861181 is an apocalyptic number.

It is an amenable number.

45861181 is a deficient number, since it is larger than the sum of its proper divisors (1).

45861181 is an equidigital number, since it uses as much as digits as its factorization.

45861181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 34.

The square root of 45861181 is about 6772.0883780411. The cubic root of 45861181 is about 357.9439926740.

The spelling of 45861181 in words is "forty-five million, eight hundred sixty-one thousand, one hundred eighty-one".