137639543 has 4 divisors (see below), whose sum is σ = 137976480. Its totient is φ = 137302608.

The previous prime is 137639533. The next prime is 137639587. The reversal of 137639543 is 345936731.

137639543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137639543 - 2¹² = 137635447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137639543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137639533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167855 + ... + 168672.

It is an arithmetic number, because the mean of its divisors is an integer number (34494120).

Almost surely, 2^137639543 is an apocalyptic number.

137639543 is a deficient number, since it is larger than the sum of its proper divisors (336937).

137639543 is an equidigital number, since it uses as much as digits as its factorization.

137639543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336936.

The product of its digits is 204120, while the sum is 41.

The square root of 137639543 is about 11731.9880242012. The cubic root of 137639543 is about 516.3146016826.

The spelling of 137639543 in words is "one hundred thirty-seven million, six hundred thirty-nine thousand, five hundred forty-three".