131755249 has 4 divisors (see below), whose sum is σ = 131796900. Its totient is φ = 131713600.

The previous prime is 131755223. The next prime is 131755259. The reversal of 131755249 is 942557131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 942557131 = 7541 ⋅124991.

It can be written as a sum of positive squares in 2 ways, for example, as 17372224 + 114383025 = 4168^2 + 10695^2 .

It is a cyclic number.

It is not a de Polignac number, because 131755249 - 2¹⁷ = 131624177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131755259) 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, 15652 + ... + 22549.

It is an arithmetic number, because the mean of its divisors is an integer number (32949225).

Almost surely, 2^131755249 is an apocalyptic number.

It is an amenable number.

131755249 is a deficient number, since it is larger than the sum of its proper divisors (41651).

131755249 is an equidigital number, since it uses as much as digits as its factorization.

131755249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41650.

The product of its digits is 37800, while the sum is 37.

The square root of 131755249 is about 11478.4689310029. The cubic root of 131755249 is about 508.8494491338.

The spelling of 131755249 in words is "one hundred thirty-one million, seven hundred fifty-five thousand, two hundred forty-nine".