136146521 has 8 divisors (see below), whose sum is σ = 156203520. Its totient is φ = 116241408.

The previous prime is 136146509. The next prime is 136146541. The reversal of 136146521 is 125641631.

It is a happy number.

136146521 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 136146521 - 2¹⁰ = 136145497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136146541) 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, 36041 + ... + 39638.

It is an arithmetic number, because the mean of its divisors is an integer number (19525440).

Almost surely, 2^136146521 is an apocalyptic number.

It is an amenable number.

136146521 is a deficient number, since it is larger than the sum of its proper divisors (20056999).

136146521 is an equidigital number, since it uses as much as digits as its factorization.

136146521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75943.

The product of its digits is 4320, while the sum is 29.

The square root of 136146521 is about 11668.1841346458. The cubic root of 136146521 is about 514.4409316285.

The spelling of 136146521 in words is "one hundred thirty-six million, one hundred forty-six thousand, five hundred twenty-one".