45152240 has 40 divisors (see below), whose sum is σ = 119977440. Its totient is φ = 15480576.

The previous prime is 45152147. The next prime is 45152251. The reversal of 45152240 is 4225154.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39755 + ... + 40874.

It is an arithmetic number, because the mean of its divisors is an integer number (2999436).

Almost surely, 2^45152240 is an apocalyptic number.

45152240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45152240 is an abundant number, since it is smaller than the sum of its proper divisors (74825200).

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

45152240 is a wasteful number, since it uses less digits than its factorization.

45152240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80649 (or 80643 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 45152240 is about 6719.5416510354. The cubic root of 45152240 is about 356.0899911369.

Adding to 45152240 its reverse (4225154), we get a palindrome (49377394).

The spelling of 45152240 in words is "forty-five million, one hundred fifty-two thousand, two hundred forty".