136897501 has 4 divisors (see below), whose sum is σ = 147428092. Its totient is φ = 126366912.

The previous prime is 136897493. The next prime is 136897507. The reversal of 136897501 is 105798631.

136897501 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 can be written as a sum of positive squares in 2 ways, for example, as 9771876 + 127125625 = 3126^2 + 11275^2 .

It is a cyclic number.

It is not a de Polignac number, because 136897501 - 2³ = 136897493 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 (136897507) 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, 5265276 + ... + 5265301.

It is an arithmetic number, because the mean of its divisors is an integer number (36857023).

Almost surely, 2^136897501 is an apocalyptic number.

It is an amenable number.

136897501 is a deficient number, since it is larger than the sum of its proper divisors (10530591).

136897501 is a wasteful number, since it uses less digits than its factorization.

136897501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530590.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 136897501 is about 11700.3205511644. The cubic root of 136897501 is about 515.3850778806.

The spelling of 136897501 in words is "one hundred thirty-six million, eight hundred ninety-seven thousand, five hundred one".