7166545 has 4 divisors (see below), whose sum is σ = 8599860. Its totient is φ = 5733232.

The previous prime is 7166543. The next prime is 7166561. The reversal of 7166545 is 5456617.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5456617 = 373 ⋅14629.

It can be written as a sum of positive squares in 2 ways, for example, as 1411344 + 5755201 = 1188^2 + 2399^2 .

It is a cyclic number.

It is not a de Polignac number, because 7166545 - 2¹ = 7166543 is a prime.

7166545 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7166545.

It is not an unprimeable number, because it can be changed into a prime (7166543) 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, 716650 + ... + 716659.

It is an arithmetic number, because the mean of its divisors is an integer number (2149965).

Almost surely, 2^7166545 is an apocalyptic number.

It is an amenable number.

7166545 is a deficient number, since it is larger than the sum of its proper divisors (1433315).

7166545 is a wasteful number, since it uses less digits than its factorization.

7166545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433314.

The product of its digits is 25200, while the sum is 34.

The square root of 7166545 is about 2677.0403433643. The cubic root of 7166545 is about 192.7983342802.

The spelling of 7166545 in words is "seven million, one hundred sixty-six thousand, five hundred forty-five".