45131875 has 10 divisors (see below), whose sum is σ = 56397572. Its totient is φ = 36105000.

The previous prime is 45131839. The next prime is 45131893. The reversal of 45131875 is 57813154.

It is a happy number.

It is not a de Polignac number, because 45131875 - 2²¹ = 43034723 is a prime.

It is a super-2 number, since 2×45131875² = 4073772282031250, which contains 22 as substring.

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 45131875.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 35481 + ... + 36730.

Almost surely, 2^45131875 is an apocalyptic number.

45131875 is a deficient number, since it is larger than the sum of its proper divisors (11265697).

45131875 is an frugal number, since it uses more digits than its factorization.

45131875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72231 (or 72216 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 45131875 is about 6718.0261237956. The cubic root of 45131875 is about 356.0364473688.

The spelling of 45131875 in words is "forty-five million, one hundred thirty-one thousand, eight hundred seventy-five".