55233133 has 12 divisors (see below), whose sum is σ = 58960960. Its totient is φ = 51597216.

The previous prime is 55233127. The next prime is 55233149. The reversal of 55233133 is 33133255.

It is a happy number.

It is not a de Polignac number, because 55233133 - 2¹³ = 55224941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55233098 and 55233107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55233533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150316 + ... + 150682.

Almost surely, 2^55233133 is an apocalyptic number.

It is an amenable number.

55233133 is a deficient number, since it is larger than the sum of its proper divisors (3727827).

55233133 is an equidigital number, since it uses as much as digits as its factorization.

55233133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 475 counting only the distinct ones).

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

The square root of 55233133 is about 7431.8996898505. The cubic root of 55233133 is about 380.8318181763.

Adding to 55233133 its reverse (33133255), we get a palindrome (88366388).

The spelling of 55233133 in words is "fifty-five million, two hundred thirty-three thousand, one hundred thirty-three".