45865138 has 16 divisors (see below), whose sum is σ = 76650624. Its totient is φ = 20403760.

The previous prime is 45865121. The next prime is 45865139. The reversal of 45865138 is 83156854.

It is a super-2 number, since 2×45865138² = 4207221767518088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45865138.

It is not an unprimeable number, because it can be changed into a prime (45865139) 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, 21145 + ... + 23212.

It is an arithmetic number, because the mean of its divisors is an integer number (4790664).

Almost surely, 2^45865138 is an apocalyptic number.

45865138 is a deficient number, since it is larger than the sum of its proper divisors (30785486).

45865138 is a wasteful number, since it uses less digits than its factorization.

45865138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44417.

The product of its digits is 115200, while the sum is 40.

The square root of 45865138 is about 6772.3805268163. The cubic root of 45865138 is about 357.9542871004.

The spelling of 45865138 in words is "forty-five million, eight hundred sixty-five thousand, one hundred thirty-eight".