136520151 has 4 divisors (see below), whose sum is σ = 182026872. Its totient is φ = 91013432.

The previous prime is 136520113. The next prime is 136520173. The reversal of 136520151 is 151025631.

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

It is a cyclic number.

It is not a de Polignac number, because 136520151 - 2¹³ = 136511959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136520191) 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, 22753356 + ... + 22753361.

It is an arithmetic number, because the mean of its divisors is an integer number (45506718).

Almost surely, 2^136520151 is an apocalyptic number.

136520151 is a deficient number, since it is larger than the sum of its proper divisors (45506721).

136520151 is an equidigital number, since it uses as much as digits as its factorization.

136520151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45506720.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 136520151 is about 11684.1837969111. The cubic root of 136520151 is about 514.9110991171.

Adding to 136520151 its reverse (151025631), we get a palindrome (287545782).

The spelling of 136520151 in words is "one hundred thirty-six million, five hundred twenty thousand, one hundred fifty-one".