137908523 has 2 divisors, whose sum is σ = 137908524. Its totient is φ = 137908522.

The previous prime is 137908501. The next prime is 137908541. The reversal of 137908523 is 325809731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137908523 - 2¹² = 137904427 is a prime.

It is not a weakly prime, because it can be changed into another prime (137908723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68954261 + 68954262.

It is an arithmetic number, because the mean of its divisors is an integer number (68954262).

Almost surely, 2^137908523 is an apocalyptic number.

137908523 is a deficient number, since it is larger than the sum of its proper divisors (1).

137908523 is an equidigital number, since it uses as much as digits as its factorization.

137908523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 137908523 is about 11743.4459593426. The cubic root of 137908523 is about 516.6507161685.

The spelling of 137908523 in words is "one hundred thirty-seven million, nine hundred eight thousand, five hundred twenty-three".