45081961 has 2 divisors, whose sum is σ = 45081962. Its totient is φ = 45081960.

The previous prime is 45081941. The next prime is 45081991. The reversal of 45081961 is 16918054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25190361 + 19891600 = 5019^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 45081961 - 2⁵ = 45081929 is a prime.

It is not a weakly prime, because it can be changed into another prime (45081941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22540980 + 22540981.

It is an arithmetic number, because the mean of its divisors is an integer number (22540981).

Almost surely, 2^45081961 is an apocalyptic number.

It is an amenable number.

45081961 is a deficient number, since it is larger than the sum of its proper divisors (1).

45081961 is an equidigital number, since it uses as much as digits as its factorization.

45081961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 45081961 is about 6714.3101656090. The cubic root of 45081961 is about 355.9051450563.

The spelling of 45081961 in words is "forty-five million, eighty-one thousand, nine hundred sixty-one".