136262257 has 4 divisors (see below), whose sum is σ = 136706416. Its totient is φ = 135818100.

The previous prime is 136262221. The next prime is 136262261. The reversal of 136262257 is 752262631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136262257 - 2¹¹ = 136260209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136262207) 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 3 ways as a sum of consecutive naturals, for example, 221619 + ... + 222232.

It is an arithmetic number, because the mean of its divisors is an integer number (34176604).

Almost surely, 2^136262257 is an apocalyptic number.

It is an amenable number.

136262257 is a deficient number, since it is larger than the sum of its proper divisors (444159).

136262257 is an equidigital number, since it uses as much as digits as its factorization.

136262257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444158.

The product of its digits is 30240, while the sum is 34.

The square root of 136262257 is about 11673.1425503161. The cubic root of 136262257 is about 514.5866630362.

The spelling of 136262257 in words is "one hundred thirty-six million, two hundred sixty-two thousand, two hundred fifty-seven".