6542573 has 4 divisors (see below), whose sum is σ = 6551580. Its totient is φ = 6533568.

The previous prime is 6542561. The next prime is 6542609. The reversal of 6542573 is 3752456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1605289 + 4937284 = 1267^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542573 - 2²⁰ = 5493997 is a prime.

It is a super-2 number, since 2×6542573² = 85610522920658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542513) 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, 3308 + ... + 4901.

It is an arithmetic number, because the mean of its divisors is an integer number (1637895).

Almost surely, 2^6542573 is an apocalyptic number.

It is an amenable number.

6542573 is a deficient number, since it is larger than the sum of its proper divisors (9007).

6542573 is an equidigital number, since it uses as much as digits as its factorization.

6542573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006.

The product of its digits is 25200, while the sum is 32.

The square root of 6542573 is about 2557.8453823482. The cubic root of 6542573 is about 187.0321181737.

The spelling of 6542573 in words is "six million, five hundred forty-two thousand, five hundred seventy-three".