131529553 has 4 divisors (see below), whose sum is σ = 131565220. Its totient is φ = 131493888.

The previous prime is 131529539. The next prime is 131529569. The reversal of 131529553 is 355925131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 102981904 + 28547649 = 10148^2 + 5343^2 .

It is a cyclic number.

It is not a de Polignac number, because 131529553 - 2⁵ = 131529521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131529583) 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, 11568 + ... + 19921.

It is an arithmetic number, because the mean of its divisors is an integer number (32891305).

Almost surely, 2^131529553 is an apocalyptic number.

It is an amenable number.

131529553 is a deficient number, since it is larger than the sum of its proper divisors (35667).

131529553 is an equidigital number, since it uses as much as digits as its factorization.

131529553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35666.

The product of its digits is 20250, while the sum is 34.

The square root of 131529553 is about 11468.6334408246. The cubic root of 131529553 is about 508.5587309902.

The spelling of 131529553 in words is "one hundred thirty-one million, five hundred twenty-nine thousand, five hundred fifty-three".