137865229 has 2 divisors, whose sum is σ = 137865230. Its totient is φ = 137865228.

The previous prime is 137865179. The next prime is 137865251. The reversal of 137865229 is 922568731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136352329 + 1512900 = 11677^2 + 1230^2 .

It is a cyclic number.

It is not a de Polignac number, because 137865229 - 2¹⁹ = 137340941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137865269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68932614 + 68932615.

It is an arithmetic number, because the mean of its divisors is an integer number (68932615).

Almost surely, 2^137865229 is an apocalyptic number.

It is an amenable number.

137865229 is a deficient number, since it is larger than the sum of its proper divisors (1).

137865229 is an equidigital number, since it uses as much as digits as its factorization.

137865229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 137865229 is about 11741.6024885873. The cubic root of 137865229 is about 516.5966459856.

The spelling of 137865229 in words is "one hundred thirty-seven million, eight hundred sixty-five thousand, two hundred twenty-nine".