45237645 has 24 divisors (see below), whose sum is σ = 78574392. Its totient is φ = 24076800.

The previous prime is 45237631. The next prime is 45237653. The reversal of 45237645 is 54673254.

45237645 is a `hidden beast` number, since 4 + 5 + 2 + 3 + 7 + 645 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1954404 + 43283241 = 1398^2 + 6579^2 .

It is not a de Polignac number, because 45237645 - 2⁶ = 45237581 is a prime.

It is a super-3 number, since 3×45237645³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33585 + ... + 34905.

It is an arithmetic number, because the mean of its divisors is an integer number (3273933).

Almost surely, 2^45237645 is an apocalyptic number.

45237645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45237645 is a deficient number, since it is larger than the sum of its proper divisors (33336747).

45237645 is a wasteful number, since it uses less digits than its factorization.

45237645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093 (or 2090 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 45237645 is about 6725.8936209250. The cubic root of 45237645 is about 356.3143632554.

The spelling of 45237645 in words is "forty-five million, two hundred thirty-seven thousand, six hundred forty-five".