571138 has 4 divisors (see below), whose sum is σ = 856710. Its totient is φ = 285568.

The previous prime is 571133. The next prime is 571147. The reversal of 571138 is 831175.

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

It can be written as a sum of positive squares in only one way, i.e., 499849 + 71289 = 707^2 + 267^2 .

It is not an unprimeable number, because it can be changed into a prime (571133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142783 + ... + 142786.

2⁵⁷¹¹³⁸ is an apocalyptic number.

571138 is a deficient number, since it is larger than the sum of its proper divisors (285572).

571138 is a wasteful number, since it uses less digits than its factorization.

571138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285571.

The product of its digits is 840, while the sum is 25.

The square root of 571138 is about 755.7367266449. The cubic root of 571138 is about 82.9685853921.

It can be divided in two parts, 57113 and 8, that added together give a square (57121 = 239²).

The spelling of 571138 in words is "five hundred seventy-one thousand, one hundred thirty-eight".