212108553 has 24 divisors (see below), whose sum is σ = 321602112. Its totient is φ = 134453088.

The previous prime is 212108543. The next prime is 212108587. The reversal of 212108553 is 355801212.

It is a happy number.

212108553 is a `hidden beast` number, since 2 + 1 + 2 + 108 + 553 = 666.

It is not a de Polignac number, because 212108553 - 2⁶ = 212108489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212108513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32850 + ... + 38772.

It is an arithmetic number, because the mean of its divisors is an integer number (13400088).

Almost surely, 2^212108553 is an apocalyptic number.

212108553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212108553 is a deficient number, since it is larger than the sum of its proper divisors (109493559).

212108553 is a wasteful number, since it uses less digits than its factorization.

212108553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125 (or 6122 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 212108553 is about 14563.9470268193. The cubic root of 212108553 is about 596.3749508053.

Adding to 212108553 its reverse (355801212), we get a palindrome (567909765).

The spelling of 212108553 in words is "two hundred twelve million, one hundred eight thousand, five hundred fifty-three".