6542506 has 4 divisors (see below), whose sum is σ = 9813762. Its totient is φ = 3271252.

The previous prime is 6542491. The next prime is 6542513. The reversal of 6542506 is 6052456.

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

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 116281 = 2535^2 + 341^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635625 + ... + 1635628.

Almost surely, 2^6542506 is an apocalyptic number.

6542506 is a deficient number, since it is larger than the sum of its proper divisors (3271256).

6542506 is a wasteful number, since it uses less digits than its factorization.

6542506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271255.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 6542506 is about 2557.8322853541. The cubic root of 6542506 is about 187.0314797300.

It can be divided in two parts, 654 and 2506, that added together give a triangular number (3160 = T₇₉).

The spelling of 6542506 in words is "six million, five hundred forty-two thousand, five hundred six".