136157237 has 4 divisors (see below), whose sum is σ = 136267500. Its totient is φ = 136046976.

The previous prime is 136157227. The next prime is 136157279. The reversal of 136157237 is 732751631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84805681 + 51351556 = 9209^2 + 7166^2 .

It is a cyclic number.

It is not a de Polignac number, because 136157237 - 2⁸ = 136156981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136157197 and 136157206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136157207) 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, 53258 + ... + 55755.

It is an arithmetic number, because the mean of its divisors is an integer number (34066875).

Almost surely, 2^136157237 is an apocalyptic number.

It is an amenable number.

136157237 is a deficient number, since it is larger than the sum of its proper divisors (110263).

136157237 is a wasteful number, since it uses less digits than its factorization.

136157237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110262.

The product of its digits is 26460, while the sum is 35.

The square root of 136157237 is about 11668.6433230260. The cubic root of 136157237 is about 514.4544283729.

The spelling of 136157237 in words is "one hundred thirty-six million, one hundred fifty-seven thousand, two hundred thirty-seven".