5172745 has 4 divisors (see below), whose sum is σ = 6207300. Its totient is φ = 4138192.

The previous prime is 5172733. The next prime is 5172749. The reversal of 5172745 is 5472715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5472715 = 5 ⋅1094543.

It can be written as a sum of positive squares in 2 ways, for example, as 2886601 + 2286144 = 1699^2 + 1512^2 .

It is a cyclic number.

It is not a de Polignac number, because 5172745 - 2²¹ = 3075593 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (5172749) 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, 517270 + ... + 517279.

It is an arithmetic number, because the mean of its divisors is an integer number (1551825).

Almost surely, 2^5172745 is an apocalyptic number.

It is an amenable number.

5172745 is a deficient number, since it is larger than the sum of its proper divisors (1034555).

5172745 is a wasteful number, since it uses less digits than its factorization.

5172745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034554.

The product of its digits is 9800, while the sum is 31.

The square root of 5172745 is about 2274.3669448882. The cubic root of 5172745 is about 172.9446067656.

The spelling of 5172745 in words is "five million, one hundred seventy-two thousand, seven hundred forty-five".