137250397 has 2 divisors, whose sum is σ = 137250398. Its totient is φ = 137250396.

The previous prime is 137250383. The next prime is 137250409. The reversal of 137250397 is 793052731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137030436 + 219961 = 11706^2 + 469^2 .

It is an emirp because it is prime and its reverse (793052731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137250397 - 2¹⁵ = 137217629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137250497) 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, 68625198 + 68625199.

It is an arithmetic number, because the mean of its divisors is an integer number (68625199).

Almost surely, 2^137250397 is an apocalyptic number.

It is an amenable number.

137250397 is a deficient number, since it is larger than the sum of its proper divisors (1).

137250397 is an equidigital number, since it uses as much as digits as its factorization.

137250397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 137250397 is about 11715.3914573948. The cubic root of 137250397 is about 515.8275531454.

The spelling of 137250397 in words is "one hundred thirty-seven million, two hundred fifty thousand, three hundred ninety-seven".