137601391 has 8 divisors (see below), whose sum is σ = 138519920. Its totient is φ = 136686528.

The previous prime is 137601377. The next prime is 137601397. The reversal of 137601391 is 193106731.

137601391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137601391 - 2⁷ = 137601263 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 (137601397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121315 + ... + 122443.

It is an arithmetic number, because the mean of its divisors is an integer number (17314990).

Almost surely, 2^137601391 is an apocalyptic number.

137601391 is a deficient number, since it is larger than the sum of its proper divisors (918529).

137601391 is a wasteful number, since it uses less digits than its factorization.

137601391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 137601391 is about 11730.3619296252. The cubic root of 137601391 is about 516.2668919072.

It can be divided in two parts, 13760 and 1391, that added together give a palindrome (15151).

The spelling of 137601391 in words is "one hundred thirty-seven million, six hundred one thousand, three hundred ninety-one".