45518573 has 4 divisors (see below), whose sum is σ = 46377468. Its totient is φ = 44659680.

The previous prime is 45518563. The next prime is 45518581. The reversal of 45518573 is 37581554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37581554 = 2 ⋅18790777.

It can be written as a sum of positive squares in 2 ways, for example, as 34316164 + 11202409 = 5858^2 + 3347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45518573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45518533) 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, 429368 + ... + 429473.

It is an arithmetic number, because the mean of its divisors is an integer number (11594367).

Almost surely, 2^45518573 is an apocalyptic number.

It is an amenable number.

45518573 is a deficient number, since it is larger than the sum of its proper divisors (858895).

45518573 is an equidigital number, since it uses as much as digits as its factorization.

45518573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858894.

The product of its digits is 84000, while the sum is 38.

The square root of 45518573 is about 6746.7453635068. The cubic root of 45518573 is about 357.0504182781.

The spelling of 45518573 in words is "forty-five million, five hundred eighteen thousand, five hundred seventy-three".