137591071 has 4 divisors (see below), whose sum is σ = 138435352. Its totient is φ = 136746792.

The previous prime is 137591053. The next prime is 137591087. The reversal of 137591071 is 170195731.

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 137591071 - 2⁹ = 137590559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137591011) 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, 421896 + ... + 422221.

It is an arithmetic number, because the mean of its divisors is an integer number (34608838).

Almost surely, 2^137591071 is an apocalyptic number.

137591071 is a deficient number, since it is larger than the sum of its proper divisors (844281).

137591071 is an equidigital number, since it uses as much as digits as its factorization.

137591071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844280.

The product of its (nonzero) digits is 6615, while the sum is 34.

The square root of 137591071 is about 11729.9220372516. The cubic root of 137591071 is about 516.2539850427.

The spelling of 137591071 in words is "one hundred thirty-seven million, five hundred ninety-one thousand, seventy-one".