528111997 has 8 divisors (see below), whose sum is σ = 603695552. Its totient is φ = 452563200.

The previous prime is 528111977. The next prime is 528112033. The reversal of 528111997 is 799111825.

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 528111997 - 2⁷ = 528111869 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 (528111917) 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, 56122 + ... + 64852.

It is an arithmetic number, because the mean of its divisors is an integer number (75461944).

Almost surely, 2^528111997 is an apocalyptic number.

It is an amenable number.

528111997 is a deficient number, since it is larger than the sum of its proper divisors (75583555).

528111997 is an equidigital number, since it uses as much as digits as its factorization.

528111997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17379.

The product of its digits is 45360, while the sum is 43.

The square root of 528111997 is about 22980.6874788375. The cubic root of 528111997 is about 808.3051474023.

The spelling of 528111997 in words is "five hundred twenty-eight million, one hundred eleven thousand, nine hundred ninety-seven".