528805531 has 2 divisors, whose sum is σ = 528805532. Its totient is φ = 528805530.

The previous prime is 528805493. The next prime is 528805561. The reversal of 528805531 is 135508825.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 528805531 - 2⁹ = 528805019 is a prime.

It is a super-2 number, since 2×528805531² = 559270579232383922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (528805561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264402765 + 264402766.

It is an arithmetic number, because the mean of its divisors is an integer number (264402766).

Almost surely, 2^528805531 is an apocalyptic number.

528805531 is a deficient number, since it is larger than the sum of its proper divisors (1).

528805531 is an equidigital number, since it uses as much as digits as its factorization.

528805531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 528805531 is about 22995.7720244396. The cubic root of 528805531 is about 808.6588235735.

The spelling of 528805531 in words is "five hundred twenty-eight million, eight hundred five thousand, five hundred thirty-one".