55205312 has 14 divisors (see below), whose sum is σ = 109548168. Its totient is φ = 27602624.

The previous prime is 55205291. The next prime is 55205321. The reversal of 55205312 is 21350255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431228 + ... + 431355.

Almost surely, 2^55205312 is an apocalyptic number.

It is an amenable number.

55205312 is a deficient number, since it is larger than the sum of its proper divisors (54342856).

55205312 is an equidigital number, since it uses as much as digits as its factorization.

55205312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862595 (or 862585 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55205312 is about 7430.0277253857. The cubic root of 55205312 is about 380.7678656122.

Adding to 55205312 its reverse (21350255), we get a palindrome (76555567).

The spelling of 55205312 in words is "fifty-five million, two hundred five thousand, three hundred twelve".