212555423 has 8 divisors (see below), whose sum is σ = 217062528. Its totient is φ = 208087704.

The previous prime is 212555401. The next prime is 212555449. The reversal of 212555423 is 324555212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212555423 - 2¹⁶ = 212489887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212555323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190 + ... + 20652.

It is an arithmetic number, because the mean of its divisors is an integer number (27132816).

Almost surely, 2^212555423 is an apocalyptic number.

212555423 is a deficient number, since it is larger than the sum of its proper divisors (4507105).

212555423 is a wasteful number, since it uses less digits than its factorization.

212555423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19693.

The product of its digits is 12000, while the sum is 29.

The square root of 212555423 is about 14579.2806063948. The cubic root of 212555423 is about 596.7934709983.

The spelling of 212555423 in words is "two hundred twelve million, five hundred fifty-five thousand, four hundred twenty-three".