6426553 has 4 divisors (see below), whose sum is σ = 7344640. Its totient is φ = 5508468.

The previous prime is 6426523. The next prime is 6426557. The reversal of 6426553 is 3556246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6426553 - 2⁹ = 6426041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6426557) 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, 459033 + ... + 459046.

It is an arithmetic number, because the mean of its divisors is an integer number (1836160).

Almost surely, 2^6426553 is an apocalyptic number.

It is an amenable number.

6426553 is a deficient number, since it is larger than the sum of its proper divisors (918087).

6426553 is an equidigital number, since it uses as much as digits as its factorization.

6426553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918086.

The product of its digits is 21600, while the sum is 31.

The square root of 6426553 is about 2535.0646934546. The cubic root of 6426553 is about 185.9199659524.

The spelling of 6426553 in words is "six million, four hundred twenty-six thousand, five hundred fifty-three".