45112240 has 40 divisors (see below), whose sum is σ = 105171840. Its totient is φ = 17995776.

The previous prime is 45112189. The next prime is 45112241. The reversal of 45112240 is 4221154.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×45112240² = 4070228395635200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45112241) 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, 48096 + ... + 49024.

It is an arithmetic number, because the mean of its divisors is an integer number (2629296).

Almost surely, 2^45112240 is an apocalyptic number.

45112240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45112240 is an abundant number, since it is smaller than the sum of its proper divisors (60059600).

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

45112240 is a wasteful number, since it uses less digits than its factorization.

45112240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 45112240 is about 6716.5645980665. The cubic root of 45112240 is about 355.9848076671.

Adding to 45112240 its reverse (4221154), we get a palindrome (49333394).

The spelling of 45112240 in words is "forty-five million, one hundred twelve thousand, two hundred forty".