137875249 has 2 divisors, whose sum is σ = 137875250. Its totient is φ = 137875248.

The previous prime is 137875247. The next prime is 137875261. The reversal of 137875249 is 942578731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96825600 + 41049649 = 9840^2 + 6407^2 .

It is a cyclic number.

It is not a de Polignac number, because 137875249 - 2¹ = 137875247 is a prime.

Together with 137875247, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 137875199 and 137875208.

It is not a weakly prime, because it can be changed into another prime (137875247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68937624 + 68937625.

It is an arithmetic number, because the mean of its divisors is an integer number (68937625).

Almost surely, 2^137875249 is an apocalyptic number.

It is an amenable number.

137875249 is a deficient number, since it is larger than the sum of its proper divisors (1).

137875249 is an equidigital number, since it uses as much as digits as its factorization.

137875249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 46.

The square root of 137875249 is about 11742.0291687595. The cubic root of 137875249 is about 516.6091610411.

The spelling of 137875249 in words is "one hundred thirty-seven million, eight hundred seventy-five thousand, two hundred forty-nine".