137038247 has 2 divisors, whose sum is σ = 137038248. Its totient is φ = 137038246.

The previous prime is 137038211. The next prime is 137038261. The reversal of 137038247 is 742830731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137038247 - 2²⁶ = 69929383 is a prime.

It is a super-2 number, since 2×137038247² = 37558962281666018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137038267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68519123 + 68519124.

It is an arithmetic number, because the mean of its divisors is an integer number (68519124).

Almost surely, 2^137038247 is an apocalyptic number.

137038247 is a deficient number, since it is larger than the sum of its proper divisors (1).

137038247 is an equidigital number, since it uses as much as digits as its factorization.

137038247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 137038247 is about 11706.3336275710. Note that the first 3 decimals coincide. The cubic root of 137038247 is about 515.5616419586.

Adding to 137038247 its reverse (742830731), we get a palindrome (879868978).

The spelling of 137038247 in words is "one hundred thirty-seven million, thirty-eight thousand, two hundred forty-seven".