135211549 has 16 divisors (see below), whose sum is σ = 156046464. Its totient is φ = 115948800.

The previous prime is 135211537. The next prime is 135211567. The reversal of 135211549 is 945112531.

It is not a de Polignac number, because 135211549 - 2¹³ = 135203357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135211549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135211529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14809 + ... + 22129.

It is an arithmetic number, because the mean of its divisors is an integer number (9752904).

Almost surely, 2^135211549 is an apocalyptic number.

It is an amenable number.

135211549 is a deficient number, since it is larger than the sum of its proper divisors (20834915).

135211549 is a wasteful number, since it uses less digits than its factorization.

135211549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428.

The product of its digits is 5400, while the sum is 31.

The square root of 135211549 is about 11628.0500944913. The cubic root of 135211549 is about 513.2606024560.

The spelling of 135211549 in words is "one hundred thirty-five million, two hundred eleven thousand, five hundred forty-nine".