571521242 has 8 divisors (see below), whose sum is σ = 857410176. Its totient is φ = 285717852.

The previous prime is 571521233. The next prime is 571521253. The reversal of 571521242 is 242125175.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 668 + ... + 33815.

It is an arithmetic number, because the mean of its divisors is an integer number (107176272).

Almost surely, 2^571521242 is an apocalyptic number.

571521242 is a deficient number, since it is larger than the sum of its proper divisors (285888934).

571521242 is a wasteful number, since it uses less digits than its factorization.

571521242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42772.

The product of its digits is 5600, while the sum is 29.

The square root of 571521242 is about 23906.5104521760. The cubic root of 571521242 is about 829.8713895659.

The spelling of 571521242 in words is "five hundred seventy-one million, five hundred twenty-one thousand, two hundred forty-two".