137255813 has 2 divisors, whose sum is σ = 137255814. Its totient is φ = 137255812.

The previous prime is 137255803. The next prime is 137255827. The reversal of 137255813 is 318552731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133102369 + 4153444 = 11537^2 + 2038^2 .

It is a cyclic number.

It is not a de Polignac number, because 137255813 - 2¹² = 137251717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137255803) 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, 68627906 + 68627907.

It is an arithmetic number, because the mean of its divisors is an integer number (68627907).

Almost surely, 2^137255813 is an apocalyptic number.

It is an amenable number.

137255813 is a deficient number, since it is larger than the sum of its proper divisors (1).

137255813 is an equidigital number, since it uses as much as digits as its factorization.

137255813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The square root of 137255813 is about 11715.6226040275. The cubic root of 137255813 is about 515.8343380323.

The spelling of 137255813 in words is "one hundred thirty-seven million, two hundred fifty-five thousand, eight hundred thirteen".