528555505 has 4 divisors (see below), whose sum is σ = 634266612. Its totient is φ = 422844400.

The previous prime is 528555493. The next prime is 528555541. The reversal of 528555505 is 505555825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 406143409 + 122412096 = 20153^2 + 11064^2 .

It is not a de Polignac number, because 528555505 - 2⁵ = 528555473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52855546 + ... + 52855555.

It is an arithmetic number, because the mean of its divisors is an integer number (158566653).

Almost surely, 2^528555505 is an apocalyptic number.

It is an amenable number.

528555505 is a deficient number, since it is larger than the sum of its proper divisors (105711107).

528555505 is a wasteful number, since it uses less digits than its factorization.

528555505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105711106.

The product of its (nonzero) digits is 250000, while the sum is 40.

The square root of 528555505 is about 22990.3350345314. The cubic root of 528555505 is about 808.5313554131.

The spelling of 528555505 in words is "five hundred twenty-eight million, five hundred fifty-five thousand, five hundred five".