45085861 has 2 divisors, whose sum is σ = 45085862. Its totient is φ = 45085860.

The previous prime is 45085837. The next prime is 45085867. The reversal of 45085861 is 16858054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28836900 + 16248961 = 5370^2 + 4031^2 .

It is a cyclic number.

It is not a de Polignac number, because 45085861 - 2⁵ = 45085829 is a prime.

It is a super-2 number, since 2×45085861² = 4065469724222642, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45085861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45085867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22542930 + 22542931.

It is an arithmetic number, because the mean of its divisors is an integer number (22542931).

Almost surely, 2^45085861 is an apocalyptic number.

It is an amenable number.

45085861 is a deficient number, since it is larger than the sum of its proper divisors (1).

45085861 is an equidigital number, since it uses as much as digits as its factorization.

45085861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 45085861 is about 6714.6005838024. The cubic root of 45085861 is about 355.9154077720.

The spelling of 45085861 in words is "forty-five million, eighty-five thousand, eight hundred sixty-one".