63571 has 4 divisors (see below), whose sum is σ = 64144. Its totient is φ = 63000.

The previous prime is 63559. The next prime is 63577. The reversal of 63571 is 17536.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 63571 - 2⁷ = 63443 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (63577) 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, 60 + ... + 361.

It is an arithmetic number, because the mean of its divisors is an integer number (16036).

2⁶³⁵⁷¹ is an apocalyptic number.

63571 is a deficient number, since it is larger than the sum of its proper divisors (573).

63571 is a wasteful number, since it uses less digits than its factorization.

63571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its digits is 630, while the sum is 22.

The square root of 63571 is about 252.1329014627. The cubic root of 63571 is about 39.9104245557.

The spelling of 63571 in words is "sixty-three thousand, five hundred seventy-one".