528045561 has 24 divisors (see below), whose sum is σ = 793316160. Its totient is φ = 350991792.

The previous prime is 528045541. The next prime is 528045563. The reversal of 528045561 is 165540825.

528045561 is a `hidden beast` number, since 52 + 8 + 0 + 45 + 561 = 666.

It is not a de Polignac number, because 528045561 - 2⁷ = 528045433 is a prime.

It is a super-2 number, since 2×528045561² = 557664228983609442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (528045563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84211 + ... + 90263.

It is an arithmetic number, because the mean of its divisors is an integer number (33054840).

Almost surely, 2^528045561 is an apocalyptic number.

It is an amenable number.

528045561 is a deficient number, since it is larger than the sum of its proper divisors (265270599).

528045561 is an equidigital number, since it uses as much as digits as its factorization.

528045561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427 (or 6415 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 528045561 is about 22979.2419587766. The cubic root of 528045561 is about 808.2712513013.

The spelling of 528045561 in words is "five hundred twenty-eight million, forty-five thousand, five hundred sixty-one".