527645385 has 12 divisors (see below), whose sum is σ = 914585412. Its totient is φ = 281410848.

The previous prime is 527645381. The next prime is 527645407. The reversal of 527645385 is 583546725.

527645385 is a `hidden beast` number, since 52 + 7 + 64 + 538 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61214976 + 466430409 = 7824^2 + 21597^2 .

It is not a de Polignac number, because 527645385 - 2² = 527645381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 11725453 = 527645385 / (5 + 2 + 7 + 6 + 4 + 5 + 3 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 527645385.

It is not an unprimeable number, because it can be changed into a prime (527645381) 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, 5862682 + ... + 5862771.

It is an arithmetic number, because the mean of its divisors is an integer number (76215451).

Almost surely, 2^527645385 is an apocalyptic number.

It is an amenable number.

527645385 is a deficient number, since it is larger than the sum of its proper divisors (386940027).

527645385 is a wasteful number, since it uses less digits than its factorization.

527645385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11725464 (or 11725461 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 527645385 is about 22970.5329716139. The cubic root of 527645385 is about 808.0670186094.

The spelling of 527645385 in words is "five hundred twenty-seven million, six hundred forty-five thousand, three hundred eighty-five".