45531889 has 8 divisors (see below), whose sum is σ = 49241192. Its totient is φ = 41852160.

The previous prime is 45531877. The next prime is 45531947. The reversal of 45531889 is 98813554.

It can be written as a sum of positive squares in 4 ways, for example, as 5841889 + 39690000 = 2417^2 + 6300^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45531889 - 2¹³ = 45523697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45531859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4134 + ... + 10399.

It is an arithmetic number, because the mean of its divisors is an integer number (6155149).

Almost surely, 2^45531889 is an apocalyptic number.

It is an amenable number.

45531889 is a deficient number, since it is larger than the sum of its proper divisors (3709303).

45531889 is a wasteful number, since it uses less digits than its factorization.

45531889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14787.

The product of its digits is 172800, while the sum is 43.

The square root of 45531889 is about 6747.7321375407. The cubic root of 45531889 is about 357.0852320512.

The spelling of 45531889 in words is "forty-five million, five hundred thirty-one thousand, eight hundred eighty-nine".