45185873 has 2 divisors, whose sum is σ = 45185874. Its totient is φ = 45185872.

The previous prime is 45185849. The next prime is 45185909. The reversal of 45185873 is 37858154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25321024 + 19864849 = 5032^2 + 4457^2 .

It is a cyclic number.

It is not a de Polignac number, because 45185873 - 2¹⁶ = 45120337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45185873.

It is not a weakly prime, because it can be changed into another prime (45185573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22592936 + 22592937.

It is an arithmetic number, because the mean of its divisors is an integer number (22592937).

Almost surely, 2^45185873 is an apocalyptic number.

It is an amenable number.

45185873 is a deficient number, since it is larger than the sum of its proper divisors (1).

45185873 is an equidigital number, since it uses as much as digits as its factorization.

45185873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 45185873 is about 6722.0438112229. The cubic root of 45185873 is about 356.1783839626.

The spelling of 45185873 in words is "forty-five million, one hundred eighty-five thousand, eight hundred seventy-three".