528456561 has 8 divisors (see below), whose sum is σ = 705616704. Its totient is φ = 351800400.

The previous prime is 528456547. The next prime is 528456583. The reversal of 528456561 is 165654825.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 528456561 - 2⁵ = 528456529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (528454561) 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, 123541 + ... + 127746.

It is an arithmetic number, because the mean of its divisors is an integer number (88202088).

Almost surely, 2^528456561 is an apocalyptic number.

It is an amenable number.

528456561 is a deficient number, since it is larger than the sum of its proper divisors (177160143).

528456561 is a wasteful number, since it uses less digits than its factorization.

528456561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251991.

The product of its digits is 288000, while the sum is 42.

The square root of 528456561 is about 22988.1830730486. The cubic root of 528456561 is about 808.4809007191.

The spelling of 528456561 in words is "five hundred twenty-eight million, four hundred fifty-six thousand, five hundred sixty-one".