45172285 has 8 divisors (see below), whose sum is σ = 56076120. Its totient is φ = 34891584.

The previous prime is 45172273. The next prime is 45172289. The reversal of 45172285 is 58227154.

It is a happy number.

45172285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18896409 + 26275876 = 4347^2 + 5126^2 .

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 45172285 - 2⁷ = 45172157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45172285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45172289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155622 + ... + 155911.

It is an arithmetic number, because the mean of its divisors is an integer number (7009515).

Almost surely, 2^45172285 is an apocalyptic number.

It is an amenable number.

45172285 is a deficient number, since it is larger than the sum of its proper divisors (10903835).

45172285 is a wasteful number, since it uses less digits than its factorization.

45172285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311567.

The product of its digits is 22400, while the sum is 34.

The square root of 45172285 is about 6721.0330307178. The cubic root of 45172285 is about 356.1426778391.

The spelling of 45172285 in words is "forty-five million, one hundred seventy-two thousand, two hundred eighty-five".