571401216 has 165 divisors, whose sum is σ = 1727121451. Its totient is φ = 188172288.

The previous prime is 571401211. The next prime is 571401241. The reversal of 571401216 is 612104175.

It is a happy number.

The square root of 571401216 is 23904.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 571401216.

It is not an unprimeable number, because it can be changed into a prime (571401211) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6884311 + ... + 6884393.

Almost surely, 2^571401216 is an apocalyptic number.

571401216 is the 23904-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 571401216

571401216 is an abundant number, since it is smaller than the sum of its proper divisors (1155720235).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

571401216 is an frugal number, since it uses more digits than its factorization.

571401216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The cubic root of 571401216 is about 829.8132913363.

The spelling of 571401216 in words is "five hundred seventy-one million, four hundred one thousand, two hundred sixteen".