137487047 has 2 divisors, whose sum is σ = 137487048. Its totient is φ = 137487046.

The previous prime is 137487043. The next prime is 137487061. The reversal of 137487047 is 740784731.

It is a weak prime.

It is an emirp because it is prime and its reverse (740784731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137487047 - 2² = 137487043 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 137486995 and 137487013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137487043) 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, 68743523 + 68743524.

It is an arithmetic number, because the mean of its divisors is an integer number (68743524).

Almost surely, 2^137487047 is an apocalyptic number.

137487047 is a deficient number, since it is larger than the sum of its proper divisors (1).

137487047 is an equidigital number, since it uses as much as digits as its factorization.

137487047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 137487047 is about 11725.4870687746. The cubic root of 137487047 is about 516.1238497958.

The spelling of 137487047 in words is "one hundred thirty-seven million, four hundred eighty-seven thousand, forty-seven".