55241321 has 4 divisors (see below), whose sum is σ = 55862100. Its totient is φ = 54620544.

The previous prime is 55241311. The next prime is 55241327. The reversal of 55241321 is 12314255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12314255 = 5 ⋅2462851.

It can be written as a sum of positive squares in 2 ways, for example, as 27415696 + 27825625 = 5236^2 + 5275^2 .

It is a cyclic number.

It is not a de Polignac number, because 55241321 - 2⁶ = 55241257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55241327) 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, 310256 + ... + 310433.

It is an arithmetic number, because the mean of its divisors is an integer number (13965525).

Almost surely, 2^55241321 is an apocalyptic number.

It is an amenable number.

55241321 is a deficient number, since it is larger than the sum of its proper divisors (620779).

55241321 is an equidigital number, since it uses as much as digits as its factorization.

55241321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620778.

The product of its digits is 1200, while the sum is 23.

The square root of 55241321 is about 7432.4505380123. The cubic root of 55241321 is about 380.8506359684.

Adding to 55241321 its reverse (12314255), we get a palindrome (67555576).

The spelling of 55241321 in words is "fifty-five million, two hundred forty-one thousand, three hundred twenty-one".