137528737 has 2 divisors, whose sum is σ = 137528738. Its totient is φ = 137528736.

The previous prime is 137528731. The next prime is 137528761. The reversal of 137528737 is 737825731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113870241 + 23658496 = 10671^2 + 4864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137528737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137528693 and 137528702.

It is not a weakly prime, because it can be changed into another prime (137528731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68764368 + 68764369.

It is an arithmetic number, because the mean of its divisors is an integer number (68764369).

Almost surely, 2^137528737 is an apocalyptic number.

It is an amenable number.

137528737 is a deficient number, since it is larger than the sum of its proper divisors (1).

137528737 is an equidigital number, since it uses as much as digits as its factorization.

137528737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 43.

The square root of 137528737 is about 11727.2646853390. The cubic root of 137528737 is about 516.1760123552.

The spelling of 137528737 in words is "one hundred thirty-seven million, five hundred twenty-eight thousand, seven hundred thirty-seven".