45542989 has 2 divisors, whose sum is σ = 45542990. Its totient is φ = 45542988.

The previous prime is 45542969. The next prime is 45543007. The reversal of 45542989 is 98924554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39501225 + 6041764 = 6285^2 + 2458^2 .

It is a cyclic number.

It is not a de Polignac number, because 45542989 - 2⁵ = 45542957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45542909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22771494 + 22771495.

It is an arithmetic number, because the mean of its divisors is an integer number (22771495).

Almost surely, 2^45542989 is an apocalyptic number.

It is an amenable number.

45542989 is a deficient number, since it is larger than the sum of its proper divisors (1).

45542989 is an equidigital number, since it uses as much as digits as its factorization.

45542989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 46.

The square root of 45542989 is about 6748.5545859836. The cubic root of 45542989 is about 357.1142470567.

The spelling of 45542989 in words is "forty-five million, five hundred forty-two thousand, nine hundred eighty-nine".