131755566 has 16 divisors (see below), whose sum is σ = 264179664. Its totient is φ = 43807104.

The previous prime is 131755541. The next prime is 131755577. The reversal of 131755566 is 665557131.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25275 + ... + 30038.

It is an arithmetic number, because the mean of its divisors is an integer number (16511229).

Almost surely, 2^131755566 is an apocalyptic number.

131755566 is an abundant number, since it is smaller than the sum of its proper divisors (132424098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131755566 is a wasteful number, since it uses less digits than its factorization.

131755566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55715.

The product of its digits is 94500, while the sum is 39.

The square root of 131755566 is about 11478.4827394565. The cubic root of 131755566 is about 508.8498572267.

The spelling of 131755566 in words is "one hundred thirty-one million, seven hundred fifty-five thousand, five hundred sixty-six".