55226257 has 2 divisors, whose sum is σ = 55226258. Its totient is φ = 55226256.

The previous prime is 55226219. The next prime is 55226279. The reversal of 55226257 is 75262255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46908801 + 8317456 = 6849^2 + 2884^2 .

It is a cyclic number.

It is not a de Polignac number, because 55226257 - 2¹¹ = 55224209 is a prime.

It is equal to p_3294943 and since 55226257 and 3294943 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (55236257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27613128 + 27613129.

It is an arithmetic number, because the mean of its divisors is an integer number (27613129).

Almost surely, 2^55226257 is an apocalyptic number.

It is an amenable number.

55226257 is a deficient number, since it is larger than the sum of its proper divisors (1).

55226257 is an equidigital number, since it uses as much as digits as its factorization.

55226257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 34.

The square root of 55226257 is about 7431.4370750212. The cubic root of 55226257 is about 380.8160142067.

The spelling of 55226257 in words is "fifty-five million, two hundred twenty-six thousand, two hundred fifty-seven".