572163421 has 8 divisors (see below), whose sum is σ = 578316024. Its totient is φ = 566042880.

The previous prime is 572163401. The next prime is 572163437. The reversal of 572163421 is 124361275.

It can be written as a sum of positive squares in 4 ways, for example, as 125686521 + 446476900 = 11211^2 + 21130^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 572163421 - 2¹³ = 572155229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (572163401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28761 + ... + 44401.

It is an arithmetic number, because the mean of its divisors is an integer number (72289503).

Almost surely, 2^572163421 is an apocalyptic number.

It is an amenable number.

572163421 is a deficient number, since it is larger than the sum of its proper divisors (6152603).

572163421 is a wasteful number, since it uses less digits than its factorization.

572163421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16031.

The product of its digits is 10080, while the sum is 31.

The square root of 572163421 is about 23919.9377298521. The cubic root of 572163421 is about 830.1820963023.

The spelling of 572163421 in words is "five hundred seventy-two million, one hundred sixty-three thousand, four hundred twenty-one".