6542455 has 4 divisors (see below), whose sum is σ = 7850952. Its totient is φ = 5233960.

The previous prime is 6542453. The next prime is 6542461. The reversal of 6542455 is 5542456.

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

It is not a de Polignac number, because 6542455 - 2¹ = 6542453 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 6³ + 5² + 4³ + 2²² + 4⁶ + 5⁸ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542453) 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, 654241 + ... + 654250.

It is an arithmetic number, because the mean of its divisors is an integer number (1962738).

Almost surely, 2^6542455 is an apocalyptic number.

6542455 is a deficient number, since it is larger than the sum of its proper divisors (1308497).

6542455 is a wasteful number, since it uses less digits than its factorization.

6542455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308496.

The product of its digits is 24000, while the sum is 31.

The square root of 6542455 is about 2557.8223159555. The cubic root of 6542455 is about 187.0309937475.

Subtracting from 6542455 its reverse (5542456), we obtain a palindrome (999999).

The spelling of 6542455 in words is "six million, five hundred forty-two thousand, four hundred fifty-five".