55233213 has 8 divisors (see below), whose sum is σ = 84164928. Its totient is φ = 31561824.

The previous prime is 55233181. The next prime is 55233229. The reversal of 55233213 is 31233255.

It is a happy number.

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

It is not a de Polignac number, because 55233213 - 2⁵ = 55233181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55233253) 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, 1315056 + ... + 1315097.

It is an arithmetic number, because the mean of its divisors is an integer number (10520616).

Almost surely, 2^55233213 is an apocalyptic number.

It is an amenable number.

55233213 is a deficient number, since it is larger than the sum of its proper divisors (28931715).

55233213 is a wasteful number, since it uses less digits than its factorization.

55233213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630163.

The product of its digits is 2700, while the sum is 24.

The square root of 55233213 is about 7431.9050720525. The cubic root of 55233213 is about 380.8320020425.

Adding to 55233213 its reverse (31233255), we get a palindrome (86466468).

The spelling of 55233213 in words is "fifty-five million, two hundred thirty-three thousand, two hundred thirteen".