7172545 has 8 divisors (see below), whose sum is σ = 8662824. Its totient is φ = 5700864.

The previous prime is 7172507. The next prime is 7172549. The reversal of 7172545 is 5452717.

It can be written as a sum of positive squares in 4 ways, for example, as 112896 + 7059649 = 336^2 + 2657^2 .

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 7172545 - 2¹⁵ = 7139777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7172549) 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, 3784 + ... + 5353.

It is an arithmetic number, because the mean of its divisors is an integer number (1082853).

Almost surely, 2^7172545 is an apocalyptic number.

It is an amenable number.

7172545 is a deficient number, since it is larger than the sum of its proper divisors (1490279).

7172545 is a wasteful number, since it uses less digits than its factorization.

7172545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9299.

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

The square root of 7172545 is about 2678.1607494697. The cubic root of 7172545 is about 192.8521243713.

The spelling of 7172545 in words is "seven million, one hundred seventy-two thousand, five hundred forty-five".