528680257 has 12 divisors (see below), whose sum is σ = 615431280. Its totient is φ = 452833416.

The previous prime is 528680249. The next prime is 528680267. The reversal of 528680257 is 752086825.

It is not a de Polignac number, because 528680257 - 2³ = 528680249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528680267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88594 + ... + 94372.

It is an arithmetic number, because the mean of its divisors is an integer number (51285940).

Almost surely, 2^528680257 is an apocalyptic number.

It is an amenable number.

528680257 is a deficient number, since it is larger than the sum of its proper divisors (86751023).

528680257 is a wasteful number, since it uses less digits than its factorization.

528680257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660 (or 7653 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 528680257 is about 22993.0480145630. The cubic root of 528680257 is about 808.5949614539.

The spelling of 528680257 in words is "five hundred twenty-eight million, six hundred eighty thousand, two hundred fifty-seven".