135321522 has 16 divisors (see below), whose sum is σ = 309306432. Its totient is φ = 38663280.

The previous prime is 135321521. The next prime is 135321523. The reversal of 135321522 is 225123531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135321521) and next prime (135321523).

It is a junction number, because it is equal to n+sod(n) for n = 135321492 and 135321501.

It is not an unprimeable number, because it can be changed into a prime (135321521) 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, 1610929 + ... + 1611012.

It is an arithmetic number, because the mean of its divisors is an integer number (19331652).

Almost surely, 2^135321522 is an apocalyptic number.

135321522 is an abundant number, since it is smaller than the sum of its proper divisors (173984910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135321522 is a wasteful number, since it uses less digits than its factorization.

135321522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221953.

The product of its digits is 1800, while the sum is 24.

The square root of 135321522 is about 11632.7779141527. Note that the first 3 decimals coincide. The cubic root of 135321522 is about 513.3997165889.

The spelling of 135321522 in words is "one hundred thirty-five million, three hundred twenty-one thousand, five hundred twenty-two".