45531123 has 16 divisors (see below), whose sum is σ = 67218816. Its totient is φ = 27181440.

The previous prime is 45531119. The next prime is 45531139. The reversal of 45531123 is 32113554.

It is not a de Polignac number, because 45531123 - 2² = 45531119 is a prime.

It is a super-3 number, since 3×45531123³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 45531093 and 45531102.

It is not an unprimeable number, because it can be changed into a prime (45531113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8086 + ... + 12507.

It is an arithmetic number, because the mean of its divisors is an integer number (4201176).

Almost surely, 2^45531123 is an apocalyptic number.

45531123 is a deficient number, since it is larger than the sum of its proper divisors (21687693).

45531123 is a wasteful number, since it uses less digits than its factorization.

45531123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20674.

The product of its digits is 1800, while the sum is 24.

The square root of 45531123 is about 6747.6753774911. The cubic root of 45531123 is about 357.0832295805.

Adding to 45531123 its reverse (32113554), we get a palindrome (77644677).

Subtracting from 45531123 its reverse (32113554), we obtain a square (13417569 = 3663²).

It can be divided in two parts, 45531 and 123, that added together give a palindrome (45654).

The spelling of 45531123 in words is "forty-five million, five hundred thirty-one thousand, one hundred twenty-three".