45315730 has 8 divisors (see below), whose sum is σ = 81568332. Its totient is φ = 18126288.

The previous prime is 45315709. The next prime is 45315731. The reversal of 45315730 is 3751354.

It can be written as a sum of positive squares in 2 ways, for example, as 41100921 + 4214809 = 6411^2 + 2053^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (45315731) 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, 2265777 + ... + 2265796.

Almost surely, 2^45315730 is an apocalyptic number.

45315730 is a deficient number, since it is larger than the sum of its proper divisors (36252602).

45315730 is a wasteful number, since it uses less digits than its factorization.

45315730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531580.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 45315730 is about 6731.6959230197. The cubic root of 45315730 is about 356.5192576085.

The spelling of 45315730 in words is "forty-five million, three hundred fifteen thousand, seven hundred thirty".