137104991 has 2 divisors, whose sum is σ = 137104992. Its totient is φ = 137104990.

The previous prime is 137104951. The next prime is 137104997. The reversal of 137104991 is 199401731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137104991 - 2²⁶ = 69996127 is a prime.

It is a super-2 number, since 2×137104991² = 37595557114220162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137104997) 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, 68552495 + 68552496.

It is an arithmetic number, because the mean of its divisors is an integer number (68552496).

Almost surely, 2^137104991 is an apocalyptic number.

137104991 is a deficient number, since it is larger than the sum of its proper divisors (1).

137104991 is an equidigital number, since it uses as much as digits as its factorization.

137104991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 137104991 is about 11709.1840450136. The cubic root of 137104991 is about 515.6453292064.

The spelling of 137104991 in words is "one hundred thirty-seven million, one hundred four thousand, nine hundred ninety-one".