65529131 has 4 divisors (see below), whose sum is σ = 65946672. Its totient is φ = 65111592.

The previous prime is 65529127. The next prime is 65529137. The reversal of 65529131 is 13192556.

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 65529131 - 2² = 65529127 is a prime.

It is a super-2 number, since 2×65529131² = 8588134019230322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65529137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208535 + ... + 208848.

It is an arithmetic number, because the mean of its divisors is an integer number (16486668).

Almost surely, 2^65529131 is an apocalyptic number.

65529131 is a deficient number, since it is larger than the sum of its proper divisors (417541).

65529131 is a wasteful number, since it uses less digits than its factorization.

65529131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417540.

The product of its digits is 8100, while the sum is 32.

The square root of 65529131 is about 8095.0065472487. The cubic root of 65529131 is about 403.1606495405.

The spelling of 65529131 in words is "sixty-five million, five hundred twenty-nine thousand, one hundred thirty-one".