426571 has 4 divisors (see below), whose sum is σ = 429352. Its totient is φ = 423792.

The previous prime is 426563. The next prime is 426583. The reversal of 426571 is 175624.

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

It is a cyclic number.

It is not a de Polignac number, because 426571 - 2³ = 426563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426541) 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, 1146 + ... + 1471.

It is an arithmetic number, because the mean of its divisors is an integer number (107338).

2⁴²⁶⁵⁷¹ is an apocalyptic number.

426571 is a deficient number, since it is larger than the sum of its proper divisors (2781).

426571 is a wasteful number, since it uses less digits than its factorization.

426571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780.

The product of its digits is 1680, while the sum is 25.

The square root of 426571 is about 653.1240310998. The cubic root of 426571 is about 75.2772552786.

The spelling of 426571 in words is "four hundred twenty-six thousand, five hundred seventy-one".