137206157 has 8 divisors (see below), whose sum is σ = 149843520. Its totient is φ = 124596160.

The previous prime is 137206129. The next prime is 137206171. The reversal of 137206157 is 751602731.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137206157 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 (137206117) 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 in 7 ways as a sum of consecutive naturals, for example, 4469 + ... + 17157.

It is an arithmetic number, because the mean of its divisors is an integer number (18730440).

Almost surely, 2^137206157 is an apocalyptic number.

It is an amenable number.

137206157 is a deficient number, since it is larger than the sum of its proper divisors (12637363).

137206157 is a wasteful number, since it uses less digits than its factorization.

137206157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13683.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 137206157 is about 11713.5031907624. The cubic root of 137206157 is about 515.7721248582.

Adding to 137206157 its reverse (751602731), we get a palindrome (888808888).

The spelling of 137206157 in words is "one hundred thirty-seven million, two hundred six thousand, one hundred fifty-seven".