45121889 has 2 divisors, whose sum is σ = 45121890. Its totient is φ = 45121888.

The previous prime is 45121873. The next prime is 45121933. The reversal of 45121889 is 98812154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 4264225 = 6392^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 45121889 - 2⁴ = 45121873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45121189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22560944 + 22560945.

It is an arithmetic number, because the mean of its divisors is an integer number (22560945).

Almost surely, 2^45121889 is an apocalyptic number.

It is an amenable number.

45121889 is a deficient number, since it is larger than the sum of its proper divisors (1).

45121889 is an equidigital number, since it uses as much as digits as its factorization.

45121889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 38.

The square root of 45121889 is about 6717.2828584183. The cubic root of 45121889 is about 356.0101862380.

The spelling of 45121889 in words is "forty-five million, one hundred twenty-one thousand, eight hundred eighty-nine".