137502997 has 2 divisors, whose sum is σ = 137502998. Its totient is φ = 137502996.

The previous prime is 137502991. The next prime is 137503087. The reversal of 137502997 is 799205731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122456356 + 15046641 = 11066^2 + 3879^2 .

It is an emirp because it is prime and its reverse (799205731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137502997 - 2²³ = 129114389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137502991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68751498 + 68751499.

It is an arithmetic number, because the mean of its divisors is an integer number (68751499).

Almost surely, 2^137502997 is an apocalyptic number.

It is an amenable number.

137502997 is a deficient number, since it is larger than the sum of its proper divisors (1).

137502997 is an equidigital number, since it uses as much as digits as its factorization.

137502997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 137502997 is about 11726.1671913716. The cubic root of 137502997 is about 516.1438076931.

The spelling of 137502997 in words is "one hundred thirty-seven million, five hundred two thousand, nine hundred ninety-seven".