137334521 has 2 divisors, whose sum is σ = 137334522. Its totient is φ = 137334520.

The previous prime is 137334503. The next prime is 137334529. The reversal of 137334521 is 125433731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128572921 + 8761600 = 11339^2 + 2960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137334521 is a prime.

It is not a weakly prime, because it can be changed into another prime (137334529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68667260 + 68667261.

It is an arithmetic number, because the mean of its divisors is an integer number (68667261).

Almost surely, 2^137334521 is an apocalyptic number.

It is an amenable number.

137334521 is a deficient number, since it is larger than the sum of its proper divisors (1).

137334521 is an equidigital number, since it uses as much as digits as its factorization.

137334521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 137334521 is about 11718.9812270521. The cubic root of 137334521 is about 515.9329192388.

The spelling of 137334521 in words is "one hundred thirty-seven million, three hundred thirty-four thousand, five hundred twenty-one".