531160221 has 8 divisors (see below), whose sum is σ = 709253280. Its totient is φ = 353586992.

The previous prime is 531160211. The next prime is 531160241. The reversal of 531160221 is 122061135.

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 531160221 - 2⁷ = 531160093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531160211) 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, 127566 + ... + 131663.

It is an arithmetic number, because the mean of its divisors is an integer number (88656660).

Almost surely, 2^531160221 is an apocalyptic number.

It is an amenable number.

531160221 is a deficient number, since it is larger than the sum of its proper divisors (178093059).

531160221 is a wasteful number, since it uses less digits than its factorization.

531160221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259915.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 531160221 is about 23046.9134809848. The cubic root of 531160221 is about 809.8573243596.

The spelling of 531160221 in words is "five hundred thirty-one million, one hundred sixty thousand, two hundred twenty-one".