529541991 has 12 divisors (see below), whose sum is σ = 834429960. Its totient is φ = 320934480.

The previous prime is 529541983. The next prime is 529542011. The reversal of 529541991 is 199145925.

It is not a de Polignac number, because 529541991 - 2³ = 529541983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (529541911) 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, 2674356 + ... + 2674553.

It is an arithmetic number, because the mean of its divisors is an integer number (69535830).

Almost surely, 2^529541991 is an apocalyptic number.

529541991 is a deficient number, since it is larger than the sum of its proper divisors (304887969).

529541991 is a wasteful number, since it uses less digits than its factorization.

529541991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5348926 (or 5348923 counting only the distinct ones).

The product of its digits is 145800, while the sum is 45.

The square root of 529541991 is about 23011.7793966481. The cubic root of 529541991 is about 809.0340520126.

It can be divided in two parts, 52954 and 1991, that added together give a palindrome (54945).

The spelling of 529541991 in words is "five hundred twenty-nine million, five hundred forty-one thousand, nine hundred ninety-one".