55441231 has 4 divisors (see below), whose sum is σ = 55601352. Its totient is φ = 55281112.

The previous prime is 55441229. The next prime is 55441241. The reversal of 55441231 is 13214455.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13214455 = 5 ⋅2642891.

It is a cyclic number.

It is not a de Polignac number, because 55441231 - 2¹ = 55441229 is a prime.

It is a super-2 number, since 2×55441231² = 6147460189590722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55441196 and 55441205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55441241) 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, 79540 + ... + 80233.

It is an arithmetic number, because the mean of its divisors is an integer number (13900338).

Almost surely, 2^55441231 is an apocalyptic number.

55441231 is a deficient number, since it is larger than the sum of its proper divisors (160121).

55441231 is a wasteful number, since it uses less digits than its factorization.

55441231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160120.

The product of its digits is 2400, while the sum is 25.

The square root of 55441231 is about 7445.8868511414. The cubic root of 55441231 is about 381.3094965465.

Adding to 55441231 its reverse (13214455), we get a palindrome (68655686).

The spelling of 55441231 in words is "fifty-five million, four hundred forty-one thousand, two hundred thirty-one".