530221555 has 8 divisors (see below), whose sum is σ = 636778800. Its totient is φ = 423835296.

The previous prime is 530221547. The next prime is 530221579. The reversal of 530221555 is 555122035.

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 530221555 - 2³ = 530221547 is a prime.

It is a super-2 number, since 2×530221555² = 562269794773236050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35820 + ... + 48409.

It is an arithmetic number, because the mean of its divisors is an integer number (79597350).

Almost surely, 2^530221555 is an apocalyptic number.

530221555 is a deficient number, since it is larger than the sum of its proper divisors (106557245).

530221555 is a wasteful number, since it uses less digits than its factorization.

530221555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85493.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 530221555 is about 23026.5402307859. The cubic root of 530221555 is about 809.3799832830.

The spelling of 530221555 in words is "five hundred thirty million, two hundred twenty-one thousand, five hundred fifty-five".