45137745 has 24 divisors (see below), whose sum is σ = 80061696. Its totient is φ = 23512608.

The previous prime is 45137731. The next prime is 45137747. The reversal of 45137745 is 54773154.

It is a happy number.

It is not a de Polignac number, because 45137745 - 2¹⁵ = 45104977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45137747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9729 + ... + 13598.

It is an arithmetic number, because the mean of its divisors is an integer number (3335904).

Almost surely, 2^45137745 is an apocalyptic number.

45137745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45137745 is a deficient number, since it is larger than the sum of its proper divisors (34923951).

45137745 is a wasteful number, since it uses less digits than its factorization.

45137745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23381 (or 23378 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 45137745 is about 6718.4629938700. The cubic root of 45137745 is about 356.0518824565.

The spelling of 45137745 in words is "forty-five million, one hundred thirty-seven thousand, seven hundred forty-five".