55312241 has 4 divisors (see below), whose sum is σ = 55379952. Its totient is φ = 55244532.

The previous prime is 55312189. The next prime is 55312267. The reversal of 55312241 is 14221355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14221355 = 5 ⋅2844271.

It is a cyclic number.

It is not a de Polignac number, because 55312241 - 2¹⁴ = 55295857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55312291) 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, 32615 + ... + 34268.

It is an arithmetic number, because the mean of its divisors is an integer number (13844988).

Almost surely, 2^55312241 is an apocalyptic number.

It is an amenable number.

55312241 is a deficient number, since it is larger than the sum of its proper divisors (67711).

55312241 is an equidigital number, since it uses as much as digits as its factorization.

55312241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67710.

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

The square root of 55312241 is about 7437.2199779219. The cubic root of 55312241 is about 381.0135476935.

Adding to 55312241 its reverse (14221355), we get a palindrome (69533596).

The spelling of 55312241 in words is "fifty-five million, three hundred twelve thousand, two hundred forty-one".