135220053 has 4 divisors (see below), whose sum is σ = 180293408. Its totient is φ = 90146700.

The previous prime is 135220051. The next prime is 135220061. The reversal of 135220053 is 350022531.

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 not a de Polignac number, because 135220053 - 2¹ = 135220051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135220051) 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, 22536673 + ... + 22536678.

It is an arithmetic number, because the mean of its divisors is an integer number (45073352).

Almost surely, 2^135220053 is an apocalyptic number.

It is an amenable number.

135220053 is a deficient number, since it is larger than the sum of its proper divisors (45073355).

135220053 is an equidigital number, since it uses as much as digits as its factorization.

135220053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45073354.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 135220053 is about 11628.4157562413. The cubic root of 135220053 is about 513.2713625740.

Adding to 135220053 its reverse (350022531), we get a palindrome (485242584).

The spelling of 135220053 in words is "one hundred thirty-five million, two hundred twenty thousand, fifty-three".