555312213 has 16 divisors (see below), whose sum is σ = 851054400. Its totient is φ = 357441840.

The previous prime is 555312209. The next prime is 555312223. The reversal of 555312213 is 312213555.

It is a happy number.

It is not a de Polignac number, because 555312213 - 2² = 555312209 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555312203) 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, 353823 + ... + 355388.

It is an arithmetic number, because the mean of its divisors is an integer number (53190900).

Almost surely, 2^555312213 is an apocalyptic number.

It is an amenable number.

555312213 is a deficient number, since it is larger than the sum of its proper divisors (295742187).

555312213 is a wasteful number, since it uses less digits than its factorization.

555312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709249 (or 709243 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 555312213 is about 23565.0633990236. The cubic root of 555312213 is about 821.9506470449.

Adding to 555312213 its reverse (312213555), we get a palindrome (867525768).

It can be divided in two parts, 5553 and 12213, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 555312213 in words is "five hundred fifty-five million, three hundred twelve thousand, two hundred thirteen".