212555545 has 8 divisors (see below), whose sum is σ = 255144960. Its totient is φ = 169992240.

The previous prime is 212555507. The next prime is 212555593. The reversal of 212555545 is 545555212.

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

It is not a de Polignac number, because 212555545 - 2¹³ = 212547353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212555545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27966 + ... + 34744.

It is an arithmetic number, because the mean of its divisors is an integer number (31893120).

Almost surely, 2^212555545 is an apocalyptic number.

It is an amenable number.

212555545 is a deficient number, since it is larger than the sum of its proper divisors (42589415).

212555545 is an equidigital number, since it uses as much as digits as its factorization.

212555545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13055.

The product of its digits is 50000, while the sum is 34.

The square root of 212555545 is about 14579.2847904141. The cubic root of 212555545 is about 596.7935851784.

The spelling of 212555545 in words is "two hundred twelve million, five hundred fifty-five thousand, five hundred forty-five".