136522 has 4 divisors (see below), whose sum is σ = 204786. Its totient is φ = 68260.

The previous prime is 136519. The next prime is 136523. The reversal of 136522 is 225631.

It is a happy number.

136522 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225631 = 7 ⋅32233.

It can be written as a sum of positive squares in only one way, i.e., 136161 + 361 = 369^2 + 19^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 136522.

It is not an unprimeable number, because it can be changed into a prime (136523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34129 + ... + 34132.

2¹³⁶⁵²² is an apocalyptic number.

136522 is the 198-th centered heptagonal number.

136522 is a deficient number, since it is larger than the sum of its proper divisors (68264).

136522 is an equidigital number, since it uses as much as digits as its factorization.

136522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68263.

The product of its digits is 360, while the sum is 19.

The square root of 136522 is about 369.4888360966. The cubic root of 136522 is about 51.4913423722.

Subtracting from 136522 its sum of digits (19), we obtain a triangular number (136503 = T₅₂₂).

The spelling of 136522 in words is "one hundred thirty-six thousand, five hundred twenty-two".