6542245 has 8 divisors (see below), whose sum is σ = 7895160. Its totient is φ = 5204160.

The previous prime is 6542243. The next prime is 6542257. The reversal of 6542245 is 5422456.

It can be written as a sum of positive squares in 4 ways, for example, as 772641 + 5769604 = 879^2 + 2402^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6542245 - 2¹ = 6542243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2710 + ... + 4519.

It is an arithmetic number, because the mean of its divisors is an integer number (986895).

Almost surely, 2^6542245 is an apocalyptic number.

It is an amenable number.

6542245 is a deficient number, since it is larger than the sum of its proper divisors (1352915).

6542245 is a wasteful number, since it uses less digits than its factorization.

6542245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7415.

The product of its digits is 9600, while the sum is 28.

The square root of 6542245 is about 2557.7812650811. The cubic root of 6542245 is about 187.0289926165.

The spelling of 6542245 in words is "six million, five hundred forty-two thousand, two hundred forty-five".