571220139 has 8 divisors (see below), whose sum is σ = 870430720. Its totient is φ = 326411496.

The previous prime is 571220113. The next prime is 571220141. The reversal of 571220139 is 931022175.

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

It is not a de Polignac number, because 571220139 - 2⁵ = 571220107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (571220149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13600459 + ... + 13600500.

It is an arithmetic number, because the mean of its divisors is an integer number (108803840).

Almost surely, 2^571220139 is an apocalyptic number.

571220139 is a deficient number, since it is larger than the sum of its proper divisors (299210581).

571220139 is a wasteful number, since it uses less digits than its factorization.

571220139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27200969.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 571220139 is about 23900.2121120295. The cubic root of 571220139 is about 829.7256261533.

The spelling of 571220139 in words is "five hundred seventy-one million, two hundred twenty thousand, one hundred thirty-nine".