131555553001 has 2 divisors, whose sum is σ = 131555553002. Its totient is φ = 131555553000.

The previous prime is 131555552981. The next prime is 131555553013. The reversal of 131555553001 is 100355555131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86848679401 + 44706873600 = 294701^2 + 211440^2 .

It is a cyclic number.

It is not a de Polignac number, because 131555553001 - 2⁵ = 131555552969 is a prime.

It is not a weakly prime, because it can be changed into another prime (131555553061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65777776500 + 65777776501.

It is an arithmetic number, because the mean of its divisors is an integer number (65777776501).

Almost surely, 2^131555553001 is an apocalyptic number.

It is an amenable number.

131555553001 is a deficient number, since it is larger than the sum of its proper divisors (1).

131555553001 is an equidigital number, since it uses as much as digits as its factorization.

131555553001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28125, while the sum is 34.

The spelling of 131555553001 in words is "one hundred thirty-one billion, five hundred fifty-five million, five hundred fifty-three thousand, one".