55224242257 has 2 divisors, whose sum is σ = 55224242258. Its totient is φ = 55224242256.

The previous prime is 55224242243. The next prime is 55224242261. The reversal of 55224242257 is 75224242255.

It is a happy number.

55224242257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51047076096 + 4177166161 = 225936^2 + 64631^2 .

It is a cyclic number.

It is not a de Polignac number, because 55224242257 - 2¹⁵ = 55224209489 is a prime.

It is not a weakly prime, because it can be changed into another prime (55224242357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27612121128 + 27612121129.

It is an arithmetic number, because the mean of its divisors is an integer number (27612121129).

Almost surely, 2^55224242257 is an apocalyptic number.

It is an amenable number.

55224242257 is a deficient number, since it is larger than the sum of its proper divisors (1).

55224242257 is an equidigital number, since it uses as much as digits as its factorization.

55224242257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448000, while the sum is 40.

The spelling of 55224242257 in words is "fifty-five billion, two hundred twenty-four million, two hundred forty-two thousand, two hundred fifty-seven".