45045023 has 4 divisors (see below), whose sum is σ = 45783528. Its totient is φ = 44306520.

The previous prime is 45045001. The next prime is 45045031. The reversal of 45045023 is 32054054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32054054 = 2 ⋅16027027.

It is a cyclic number.

It is not a de Polignac number, because 45045023 - 2⁶ = 45044959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45045023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45045073) 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, 369161 + ... + 369282.

It is an arithmetic number, because the mean of its divisors is an integer number (11445882).

Almost surely, 2^45045023 is an apocalyptic number.

45045023 is a deficient number, since it is larger than the sum of its proper divisors (738505).

45045023 is an equidigital number, since it uses as much as digits as its factorization.

45045023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738504.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 45045023 is about 6711.5589098212. The cubic root of 45045023 is about 355.8079146186.

Adding to 45045023 its reverse (32054054), we get a palindrome (77099077).

The spelling of 45045023 in words is "forty-five million, forty-five thousand, twenty-three".