426605555 has 4 divisors (see below), whose sum is σ = 511926672. Its totient is φ = 341284440.

The previous prime is 426605521. The next prime is 426605563. The reversal of 426605555 is 555506624.

It is a happy number.

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

It is not a de Polignac number, because 426605555 - 2²² = 422411251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42660551 + ... + 42660560.

It is an arithmetic number, because the mean of its divisors is an integer number (127981668).

Almost surely, 2^426605555 is an apocalyptic number.

426605555 is a deficient number, since it is larger than the sum of its proper divisors (85321117).

426605555 is an equidigital number, since it uses as much as digits as its factorization.

426605555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85321116.

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 426605555 is about 20654.4318488793. The cubic root of 426605555 is about 752.7928787136.

The spelling of 426605555 in words is "four hundred twenty-six million, six hundred five thousand, five hundred fifty-five".