55233313 has 4 divisors (see below), whose sum is σ = 57137940. Its totient is φ = 53328688.

The previous prime is 55233301. The next prime is 55233317. The reversal of 55233313 is 31333255.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33443089 + 21790224 = 5783^2 + 4668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55233313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55233317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952270 + ... + 952327.

It is an arithmetic number, because the mean of its divisors is an integer number (14284485).

Almost surely, 2^55233313 is an apocalyptic number.

It is an amenable number.

55233313 is a deficient number, since it is larger than the sum of its proper divisors (1904627).

55233313 is a wasteful number, since it uses less digits than its factorization.

55233313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904626.

The product of its digits is 4050, while the sum is 25.

The square root of 55233313 is about 7431.9117997996. The cubic root of 55233313 is about 380.8322318751.

Adding to 55233313 its reverse (31333255), we get a palindrome (86566568).

It can be divided in two parts, 5523 and 3313, that added together give a square (8836 = 94²).

The spelling of 55233313 in words is "fifty-five million, two hundred thirty-three thousand, three hundred thirteen".