212126553 has 16 divisors (see below), whose sum is σ = 316560960. Its totient is φ = 140383008.

The previous prime is 212126533. The next prime is 212126581. The reversal of 212126553 is 355621212.

It is a happy number.

212126553 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 2 + 655 + 3 = 666.

212126553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212126553 - 2¹⁸ = 211864409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212126533) 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, 24975 + ... + 32372.

It is an arithmetic number, because the mean of its divisors is an integer number (19785060).

Almost surely, 2^212126553 is an apocalyptic number.

It is an amenable number.

212126553 is a deficient number, since it is larger than the sum of its proper divisors (104434407).

212126553 is a wasteful number, since it uses less digits than its factorization.

212126553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57493 (or 57487 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 212126553 is about 14564.5649780555. The cubic root of 212126553 is about 596.3918202263.

Adding to 212126553 its reverse (355621212), we get a palindrome (567747765).

The spelling of 212126553 in words is "two hundred twelve million, one hundred twenty-six thousand, five hundred fifty-three".