527983891 has 4 divisors (see below), whose sum is σ = 528032232. Its totient is φ = 527935552.

The previous prime is 527983879. The next prime is 527983957. The reversal of 527983891 is 198389725.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-527983891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (527983801) 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, 840 + ... + 32506.

It is an arithmetic number, because the mean of its divisors is an integer number (132008058).

Almost surely, 2^527983891 is an apocalyptic number.

527983891 is the 14533-rd centered pentagonal number.

527983891 is a deficient number, since it is larger than the sum of its proper divisors (48341).

527983891 is a wasteful number, since it uses less digits than its factorization.

527983891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48340.

The product of its digits is 1088640, while the sum is 52.

The square root of 527983891 is about 22977.9000563585. The cubic root of 527983891 is about 808.2397843015.

The spelling of 527983891 in words is "five hundred twenty-seven million, nine hundred eighty-three thousand, eight hundred ninety-one".