4509172 has 12 divisors (see below), whose sum is σ = 7908516. Its totient is φ = 2249600.

The previous prime is 4509163. The next prime is 4509179. The reversal of 4509172 is 2719054.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 3083536 = 1194^2 + 1756^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4509172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4509179) 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, 1422 + ... + 3322.

It is an arithmetic number, because the mean of its divisors is an integer number (659043).

Almost surely, 2^4509172 is an apocalyptic number.

It is an amenable number.

4509172 is a deficient number, since it is larger than the sum of its proper divisors (3399344).

4509172 is a wasteful number, since it uses less digits than its factorization.

4509172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 4509172 is about 2123.4811042249. The cubic root of 4509172 is about 165.2084540149.

The spelling of 4509172 in words is "four million, five hundred nine thousand, one hundred seventy-two".