137855087 has 2 divisors, whose sum is σ = 137855088. Its totient is φ = 137855086.

The previous prime is 137855083. The next prime is 137855101. The reversal of 137855087 is 780558731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137855087 - 2² = 137855083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137855083) 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, 68927543 + 68927544.

It is an arithmetic number, because the mean of its divisors is an integer number (68927544).

Almost surely, 2^137855087 is an apocalyptic number.

137855087 is a deficient number, since it is larger than the sum of its proper divisors (1).

137855087 is an equidigital number, since it uses as much as digits as its factorization.

137855087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 44.

The square root of 137855087 is about 11741.1705975171. The cubic root of 137855087 is about 516.5839779336.

It can be divided in two parts, 1378 and 55087, that added together give a palindrome (56465).

The spelling of 137855087 in words is "one hundred thirty-seven million, eight hundred fifty-five thousand, eighty-seven".