527681387 has 4 divisors (see below), whose sum is σ = 550624080. Its totient is φ = 504738696.

The previous prime is 527681353. The next prime is 527681389. The reversal of 527681387 is 783186725.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 527681387 - 2⁸ = 527681131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (527681389) 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, 11471312 + ... + 11471357.

It is an arithmetic number, because the mean of its divisors is an integer number (137656020).

Almost surely, 2^527681387 is an apocalyptic number.

527681387 is a deficient number, since it is larger than the sum of its proper divisors (22942693).

527681387 is a wasteful number, since it uses less digits than its factorization.

527681387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22942692.

The product of its digits is 564480, while the sum is 47.

The square root of 527681387 is about 22971.3166144216. The cubic root of 527681387 is about 808.0853967146.

The spelling of 527681387 in words is "five hundred twenty-seven million, six hundred eighty-one thousand, three hundred eighty-seven".