528561939 has 4 divisors (see below), whose sum is σ = 704749256. Its totient is φ = 352374624.

The previous prime is 528561899. The next prime is 528561949. The reversal of 528561939 is 939165825.

It is a happy number.

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

It is not a de Polignac number, because 528561939 - 2¹³ = 528553747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528561949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88093654 + ... + 88093659.

It is an arithmetic number, because the mean of its divisors is an integer number (176187314).

Almost surely, 2^528561939 is an apocalyptic number.

528561939 is a deficient number, since it is larger than the sum of its proper divisors (176187317).

528561939 is a wasteful number, since it uses less digits than its factorization.

528561939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176187316.

The product of its digits is 583200, while the sum is 48.

The square root of 528561939 is about 22990.4749624709. The cubic root of 528561939 is about 808.5346360964.

The spelling of 528561939 in words is "five hundred twenty-eight million, five hundred sixty-one thousand, nine hundred thirty-nine".