135553212 has 18 divisors (see below), whose sum is σ = 342648488. Its totient is φ = 45184392.

The previous prime is 135553207. The next prime is 135553213. The reversal of 135553212 is 212355531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135553213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1882648 + ... + 1882719.

Almost surely, 2^135553212 is an apocalyptic number.

135553212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135553212 is an abundant number, since it is smaller than the sum of its proper divisors (207095276).

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

135553212 is a wasteful number, since it uses less digits than its factorization.

135553212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765377 (or 3765372 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 135553212 is about 11642.7321535798. The cubic root of 135553212 is about 513.6925543597.

The spelling of 135553212 in words is "one hundred thirty-five million, five hundred fifty-three thousand, two hundred twelve".