131550261 has 16 divisors (see below), whose sum is σ = 177830016. Its totient is φ = 86492736.

The previous prime is 131550259. The next prime is 131550299. The reversal of 131550261 is 162055131.

It is not a de Polignac number, because 131550261 - 2¹ = 131550259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131550241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89811 + ... + 91263.

It is an arithmetic number, because the mean of its divisors is an integer number (11114376).

Almost surely, 2^131550261 is an apocalyptic number.

It is an amenable number.

131550261 is a deficient number, since it is larger than the sum of its proper divisors (46279755).

131550261 is a wasteful number, since it uses less digits than its factorization.

131550261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 131550261 is about 11469.5362155582. The cubic root of 131550261 is about 508.5854187354.

The spelling of 131550261 in words is "one hundred thirty-one million, five hundred fifty thousand, two hundred sixty-one".