45784457 has 4 divisors (see below), whose sum is σ = 45974676. Its totient is φ = 45594240.

The previous prime is 45784423. The next prime is 45784463. The reversal of 45784457 is 75448754.

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 35473936 + 10310521 = 5956^2 + 3211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45784457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45780457) 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, 94748 + ... + 95229.

It is an arithmetic number, because the mean of its divisors is an integer number (11493669).

Almost surely, 2^45784457 is an apocalyptic number.

It is an amenable number.

45784457 is a deficient number, since it is larger than the sum of its proper divisors (190219).

45784457 is a wasteful number, since it uses less digits than its factorization.

45784457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190218.

The product of its digits is 627200, while the sum is 44.

The square root of 45784457 is about 6766.4212845492. The cubic root of 45784457 is about 357.7442723926.

The spelling of 45784457 in words is "forty-five million, seven hundred eighty-four thousand, four hundred fifty-seven".