45118037 has 4 divisors (see below), whose sum is σ = 45281196. Its totient is φ = 44954880.

The previous prime is 45118033. The next prime is 45118057. The reversal of 45118037 is 73081154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73081154 = 2 ⋅36540577.

It can be written as a sum of positive squares in 2 ways, for example, as 20921476 + 24196561 = 4574^2 + 4919^2 .

It is a cyclic number.

It is not a de Polignac number, because 45118037 - 2² = 45118033 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45118033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81164 + ... + 81717.

It is an arithmetic number, because the mean of its divisors is an integer number (11320299).

Almost surely, 2^45118037 is an apocalyptic number.

It is an amenable number.

45118037 is a deficient number, since it is larger than the sum of its proper divisors (163159).

45118037 is a wasteful number, since it uses less digits than its factorization.

45118037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163158.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 45118037 is about 6716.9961292232. The cubic root of 45118037 is about 356.0000552329. Note that the first 4 decimals are identical.

The spelling of 45118037 in words is "forty-five million, one hundred eighteen thousand, thirty-seven".