45537289 has 4 divisors (see below), whose sum is σ = 52042624. Its totient is φ = 39031956.

The previous prime is 45537277. The next prime is 45537397. The reversal of 45537289 is 98273554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45537289 - 2⁷ = 45537161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45537209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3252657 + ... + 3252670.

It is an arithmetic number, because the mean of its divisors is an integer number (13010656).

Almost surely, 2^45537289 is an apocalyptic number.

It is an amenable number.

45537289 is a deficient number, since it is larger than the sum of its proper divisors (6505335).

45537289 is an equidigital number, since it uses as much as digits as its factorization.

45537289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505334.

The product of its digits is 302400, while the sum is 43.

The square root of 45537289 is about 6748.1322601146. The cubic root of 45537289 is about 357.0993480483.

The spelling of 45537289 in words is "forty-five million, five hundred thirty-seven thousand, two hundred eighty-nine".