45715609 has 8 divisors (see below), whose sum is σ = 47128968. Its totient is φ = 44311680.

The previous prime is 45715603. The next prime is 45715613. The reversal of 45715609 is 90651754.

It can be written as a sum of positive squares in 4 ways, for example, as 18966025 + 26749584 = 4355^2 + 5172^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 45715609 - 2¹⁵ = 45682841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45715603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8199 + ... + 12595.

It is an arithmetic number, because the mean of its divisors is an integer number (5891121).

Almost surely, 2^45715609 is an apocalyptic number.

It is an amenable number.

45715609 is a deficient number, since it is larger than the sum of its proper divisors (1413359).

45715609 is a wasteful number, since it uses less digits than its factorization.

45715609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 45715609 is about 6761.3318954182. The cubic root of 45715609 is about 357.5648641005.

The spelling of 45715609 in words is "forty-five million, seven hundred fifteen thousand, six hundred nine".