135571216 has 20 divisors (see below), whose sum is σ = 286548624. Its totient is φ = 61623200.

The previous prime is 135571211. The next prime is 135571229. The reversal of 135571216 is 612175531.

It is not an unprimeable number, because it can be changed into a prime (135571211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384970 + ... + 385321.

Almost surely, 2^135571216 is an apocalyptic number.

135571216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135571216 is an abundant number, since it is smaller than the sum of its proper divisors (150977408).

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

135571216 is a wasteful number, since it uses less digits than its factorization.

135571216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770310 (or 770304 counting only the distinct ones).

The product of its digits is 6300, while the sum is 31.

The square root of 135571216 is about 11643.5053141225. The cubic root of 135571216 is about 513.7152960102.

The spelling of 135571216 in words is "one hundred thirty-five million, five hundred seventy-one thousand, two hundred sixteen".