213412555 has 4 divisors (see below), whose sum is σ = 256095072. Its totient is φ = 170730040.

The previous prime is 213412547. The next prime is 213412613. The reversal of 213412555 is 555214312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213412555 - 2³ = 213412547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21341251 + ... + 21341260.

It is an arithmetic number, because the mean of its divisors is an integer number (64023768).

Almost surely, 2^213412555 is an apocalyptic number.

213412555 is a deficient number, since it is larger than the sum of its proper divisors (42682517).

213412555 is an equidigital number, since it uses as much as digits as its factorization.

213412555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42682516.

The product of its digits is 6000, while the sum is 28.

The square root of 213412555 is about 14608.6465834450. The cubic root of 213412555 is about 597.5945871276.

Adding to 213412555 its reverse (555214312), we get a palindrome (768626867).

The spelling of 213412555 in words is "two hundred thirteen million, four hundred twelve thousand, five hundred fifty-five".