135520045 has 16 divisors (see below), whose sum is σ = 169331760. Its totient is φ = 103993344.

The previous prime is 135520009. The next prime is 135520057. The reversal of 135520045 is 540025531.

It can be written as a sum of positive squares in 8 ways, for example, as 32558436 + 102961609 = 5706^2 + 10147^2 .

It is a cyclic number.

It is not a de Polignac number, because 135520045 - 2¹⁵ = 135487277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19789 + ... + 25741.

It is an arithmetic number, because the mean of its divisors is an integer number (10583235).

Almost surely, 2^135520045 is an apocalyptic number.

It is an amenable number.

135520045 is a deficient number, since it is larger than the sum of its proper divisors (33811715).

135520045 is a wasteful number, since it uses less digits than its factorization.

135520045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 135520045 is about 11641.3077014569. The cubic root of 135520045 is about 513.6506543795.

Adding to 135520045 its reverse (540025531), we get a palindrome (675545576).

The spelling of 135520045 in words is "one hundred thirty-five million, five hundred twenty thousand, forty-five".