45717181 has 2 divisors, whose sum is σ = 45717182. Its totient is φ = 45717180.

The previous prime is 45717179. The next prime is 45717193. The reversal of 45717181 is 18171754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41344900 + 4372281 = 6430^2 + 2091^2 .

It is a cyclic number.

It is not a de Polignac number, because 45717181 - 2¹ = 45717179 is a prime.

It is a super-2 number, since 2×45717181² = 4180121277173522, which contains 22 as substring.

Together with 45717179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45717101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22858590 + 22858591.

It is an arithmetic number, because the mean of its divisors is an integer number (22858591).

Almost surely, 2^45717181 is an apocalyptic number.

It is an amenable number.

45717181 is a deficient number, since it is larger than the sum of its proper divisors (1).

45717181 is an equidigital number, since it uses as much as digits as its factorization.

45717181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 34.

The square root of 45717181 is about 6761.4481437041. The cubic root of 45717181 is about 357.5689625222.

The spelling of 45717181 in words is "forty-five million, seven hundred seventeen thousand, one hundred eighty-one".