137286881 has 2 divisors, whose sum is σ = 137286882. Its totient is φ = 137286880.

The previous prime is 137286857. The next prime is 137286887. The reversal of 137286881 is 188682731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117180625 + 20106256 = 10825^2 + 4484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137286881 is a prime.

It is a super-2 number, since 2×137286881² = 37695375389416322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (137286887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68643440 + 68643441.

It is an arithmetic number, because the mean of its divisors is an integer number (68643441).

Almost surely, 2^137286881 is an apocalyptic number.

It is an amenable number.

137286881 is a deficient number, since it is larger than the sum of its proper divisors (1).

137286881 is an equidigital number, since it uses as much as digits as its factorization.

137286881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 137286881 is about 11716.9484508553. The cubic root of 137286881 is about 515.8732549808.

The spelling of 137286881 in words is "one hundred thirty-seven million, two hundred eighty-six thousand, eight hundred eighty-one".