45031224 has 32 divisors (see below), whose sum is σ = 128661120. Its totient is φ = 12866016.

The previous prime is 45031223. The next prime is 45031307. The reversal of 45031224 is 42213054.

It is a super-2 number, since 2×45031224² = 4055622269876352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 45031224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45031223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133854 + ... + 134189.

It is an arithmetic number, because the mean of its divisors is an integer number (4020660).

Almost surely, 2^45031224 is an apocalyptic number.

It is an amenable number.

45031224 is an abundant number, since it is smaller than the sum of its proper divisors (83629896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45031224 is a wasteful number, since it uses less digits than its factorization.

45031224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268059 (or 268055 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 45031224 is about 6710.5308284815. The cubic root of 45031224 is about 355.7715784189.

Adding to 45031224 its reverse (42213054), we get a palindrome (87244278).

The spelling of 45031224 in words is "forty-five million, thirty-one thousand, two hundred twenty-four".