131775055 has 4 divisors (see below), whose sum is σ = 158130072. Its totient is φ = 105420040.

The previous prime is 131775053. The next prime is 131775097. The reversal of 131775055 is 550577131.

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

It is not a de Polignac number, because 131775055 - 2¹ = 131775053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131775055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131775053) 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, 13177501 + ... + 13177510.

It is an arithmetic number, because the mean of its divisors is an integer number (39532518).

Almost surely, 2^131775055 is an apocalyptic number.

131775055 is a deficient number, since it is larger than the sum of its proper divisors (26355017).

131775055 is an equidigital number, since it uses as much as digits as its factorization.

131775055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26355016.

The product of its (nonzero) digits is 18375, while the sum is 34.

The square root of 131775055 is about 11479.3316443075. The cubic root of 131775055 is about 508.8749453153.

The spelling of 131775055 in words is "one hundred thirty-one million, seven hundred seventy-five thousand, fifty-five".