137591087 has 2 divisors, whose sum is σ = 137591088. Its totient is φ = 137591086.

The previous prime is 137591053. The next prime is 137591093. The reversal of 137591087 is 780195731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137591087 - 2¹⁶ = 137525551 is a prime.

It is a Chen prime.

It is equal to p_7783826 and since 137591087 and 7783826 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137591017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68795543 + 68795544.

It is an arithmetic number, because the mean of its divisors is an integer number (68795544).

Almost surely, 2^137591087 is an apocalyptic number.

137591087 is a deficient number, since it is larger than the sum of its proper divisors (1).

137591087 is an equidigital number, since it uses as much as digits as its factorization.

137591087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 137591087 is about 11729.9227192680. The cubic root of 137591087 is about 516.2540050539.

The spelling of 137591087 in words is "one hundred thirty-seven million, five hundred ninety-one thousand, eighty-seven".