45890161 has 2 divisors, whose sum is σ = 45890162. Its totient is φ = 45890160.

The previous prime is 45890147. The next prime is 45890167. The reversal of 45890161 is 16109854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 1254400 = 6681^2 + 1120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45890161 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (45890167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22945080 + 22945081.

It is an arithmetic number, because the mean of its divisors is an integer number (22945081).

Almost surely, 2^45890161 is an apocalyptic number.

It is an amenable number.

45890161 is a deficient number, since it is larger than the sum of its proper divisors (1).

45890161 is an equidigital number, since it uses as much as digits as its factorization.

45890161 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 45890161 is about 6774.2277050598. The cubic root of 45890161 is about 358.0193725667.

The spelling of 45890161 in words is "forty-five million, eight hundred ninety thousand, one hundred sixty-one".