55216417 has 2 divisors, whose sum is σ = 55216418. Its totient is φ = 55216416.

The previous prime is 55216411. The next prime is 55216423. The reversal of 55216417 is 71461255.

It is a balanced prime because it is at equal distance from previous prime (55216411) and next prime (55216423).

It can be written as a sum of positive squares in only one way, i.e., 53567761 + 1648656 = 7319^2 + 1284^2 .

It is a cyclic number.

It is not a de Polignac number, because 55216417 - 2¹⁹ = 54692129 is a prime.

It is not a weakly prime, because it can be changed into another prime (55216411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27608208 + 27608209.

It is an arithmetic number, because the mean of its divisors is an integer number (27608209).

Almost surely, 2^55216417 is an apocalyptic number.

It is an amenable number.

55216417 is a deficient number, since it is larger than the sum of its proper divisors (1).

55216417 is an equidigital number, since it uses as much as digits as its factorization.

55216417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 31.

The square root of 55216417 is about 7430.7749932292. The cubic root of 55216417 is about 380.7933954238.

The spelling of 55216417 in words is "fifty-five million, two hundred sixteen thousand, four hundred seventeen".