212255454 has 16 divisors (see below), whose sum is σ = 442968192. Its totient is φ = 67675608.

The previous prime is 212255453. The next prime is 212255473. The reversal of 212255454 is 454552212.

It is a super-2 number, since 2×212255454² = 90104755505492232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212255453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 768904 + ... + 769179.

It is an arithmetic number, because the mean of its divisors is an integer number (27685512).

Almost surely, 2^212255454 is an apocalyptic number.

212255454 is an abundant number, since it is smaller than the sum of its proper divisors (230712738).

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

212255454 is a wasteful number, since it uses less digits than its factorization.

212255454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538111.

The product of its digits is 16000, while the sum is 30.

The square root of 212255454 is about 14568.9894639265. The cubic root of 212255454 is about 596.5125970846.

The spelling of 212255454 in words is "two hundred twelve million, two hundred fifty-five thousand, four hundred fifty-four".