6538572 has 36 divisors (see below), whose sum is σ = 17100720. Its totient is φ = 2104032.

The previous prime is 6538561. The next prime is 6538573. The reversal of 6538572 is 2758356.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 6⁴ + 5⁹ + 3¹² + 8⁷ + 5⁹ + 7⁴ + 2⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2088 + ... + 4175.

It is an arithmetic number, because the mean of its divisors is an integer number (475020).

Almost surely, 2^6538572 is an apocalyptic number.

6538572 is the 2088-th pentagonal number.

It is an amenable number.

6538572 is an abundant number, since it is smaller than the sum of its proper divisors (10562148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6538572 is a wasteful number, since it uses less digits than its factorization.

6538572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302 (or 6297 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 6538572 is about 2557.0631591730. The cubic root of 6538572 is about 186.9939849553.

The spelling of 6538572 in words is "six million, five hundred thirty-eight thousand, five hundred seventy-two".