55216411 has 2 divisors, whose sum is σ = 55216412. Its totient is φ = 55216410.

The previous prime is 55216393. The next prime is 55216417. The reversal of 55216411 is 11461255.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55216411 - 2⁷ = 55216283 is a prime.

It is not a weakly prime, because it can be changed into another prime (55216417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27608205 + 27608206.

It is an arithmetic number, because the mean of its divisors is an integer number (27608206).

Almost surely, 2^55216411 is an apocalyptic number.

55216411 is a deficient number, since it is larger than the sum of its proper divisors (1).

55216411 is an equidigital number, since it uses as much as digits as its factorization.

55216411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 55216411 is about 7430.7745895028. The cubic root of 55216411 is about 380.7933816311.

Adding to 55216411 its reverse (11461255), we get a palindrome (66677666).

The spelling of 55216411 in words is "fifty-five million, two hundred sixteen thousand, four hundred eleven".