135321051 has 8 divisors (see below), whose sum is σ = 180597520. Its totient is φ = 90129312.

The previous prime is 135321007. The next prime is 135321061. The reversal of 135321051 is 150123531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135321051 - 2⁹ = 135320539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135321061) 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 7 ways as a sum of consecutive naturals, for example, 17356 + ... + 23913.

It is an arithmetic number, because the mean of its divisors is an integer number (22574690).

Almost surely, 2^135321051 is an apocalyptic number.

135321051 is a deficient number, since it is larger than the sum of its proper divisors (45276469).

135321051 is a wasteful number, since it uses less digits than its factorization.

135321051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42365.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 135321051 is about 11632.7576696156. The cubic root of 135321051 is about 513.3991209420.

Adding to 135321051 its reverse (150123531), we get a palindrome (285444582).

The spelling of 135321051 in words is "one hundred thirty-five million, three hundred twenty-one thousand, fifty-one".