131355545 has 16 divisors (see below), whose sum is σ = 160218000. Its totient is φ = 103369728.

The previous prime is 131355541. The next prime is 131355547. The reversal of 131355545 is 545553131.

It can be written as a sum of positive squares in 8 ways, for example, as 4748041 + 126607504 = 2179^2 + 11252^2 .

It is a cyclic number.

It is not a de Polignac number, because 131355545 - 2² = 131355541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131355541) 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, 101261 + ... + 102549.

It is an arithmetic number, because the mean of its divisors is an integer number (10013625).

Almost surely, 2^131355545 is an apocalyptic number.

It is an amenable number.

131355545 is a deficient number, since it is larger than the sum of its proper divisors (28862455).

131355545 is a wasteful number, since it uses less digits than its factorization.

131355545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612.

The product of its digits is 22500, while the sum is 32.

The square root of 131355545 is about 11461.0446731526. The cubic root of 131355545 is about 508.3343648341.

The spelling of 131355545 in words is "one hundred thirty-one million, three hundred fifty-five thousand, five hundred forty-five".