45784537 has 4 divisors (see below), whose sum is σ = 46299060. Its totient is φ = 45270016.

The previous prime is 45784511. The next prime is 45784597. The reversal of 45784537 is 73548754.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17172736 + 28611801 = 4144^2 + 5349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45784537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45784493 and 45784502.

It is not an unprimeable number, because it can be changed into a prime (45784507) 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, 257128 + ... + 257305.

It is an arithmetic number, because the mean of its divisors is an integer number (11574765).

Almost surely, 2^45784537 is an apocalyptic number.

It is an amenable number.

45784537 is a deficient number, since it is larger than the sum of its proper divisors (514523).

45784537 is an equidigital number, since it uses as much as digits as its factorization.

45784537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514522.

The product of its digits is 470400, while the sum is 43.

The square root of 45784537 is about 6766.4271960910. The cubic root of 45784537 is about 357.7444807568.

The spelling of 45784537 in words is "forty-five million, seven hundred eighty-four thousand, five hundred thirty-seven".