55411231 has 2 divisors, whose sum is σ = 55411232. Its totient is φ = 55411230.

The previous prime is 55411217. The next prime is 55411247. The reversal of 55411231 is 13211455.

It is a happy number.

55411231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55411231 - 2¹³ = 55403039 is a prime.

It is a super-2 number, since 2×55411231² = 6140809041870722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55411331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27705615 + 27705616.

It is an arithmetic number, because the mean of its divisors is an integer number (27705616).

Almost surely, 2^55411231 is an apocalyptic number.

55411231 is a deficient number, since it is larger than the sum of its proper divisors (1).

55411231 is an equidigital number, since it uses as much as digits as its factorization.

55411231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 55411231 is about 7443.8720434999. The cubic root of 55411231 is about 381.2407068952.

Adding to 55411231 its reverse (13211455), we get a palindrome (68622686).

It can be divided in two parts, 5541 and 1231, that multiplied together give a triangular number (6820971 = T₃₆₉₃).

The spelling of 55411231 in words is "fifty-five million, four hundred eleven thousand, two hundred thirty-one".