45272523 has 4 divisors (see below), whose sum is σ = 60363368. Its totient is φ = 30181680.

The previous prime is 45272489. The next prime is 45272527. The reversal of 45272523 is 32527254.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 45272523 - 2²⁰ = 44223947 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45272527) 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, 7545418 + ... + 7545423.

It is an arithmetic number, because the mean of its divisors is an integer number (15090842).

Almost surely, 2^45272523 is an apocalyptic number.

45272523 is a deficient number, since it is larger than the sum of its proper divisors (15090845).

45272523 is a wasteful number, since it uses less digits than its factorization.

45272523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15090844.

The product of its digits is 16800, while the sum is 30.

The square root of 45272523 is about 6728.4859366725. The cubic root of 45272523 is about 356.4059119341.

Adding to 45272523 its reverse (32527254), we get a palindrome (77799777).

The spelling of 45272523 in words is "forty-five million, two hundred seventy-two thousand, five hundred twenty-three".