55225223 has 2 divisors, whose sum is σ = 55225224. Its totient is φ = 55225222.

The previous prime is 55225217. The next prime is 55225243. The reversal of 55225223 is 32252255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55225223 - 2¹⁰ = 55224199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55225192 and 55225201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55225243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27612611 + 27612612.

It is an arithmetic number, because the mean of its divisors is an integer number (27612612).

Almost surely, 2^55225223 is an apocalyptic number.

55225223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55225223 is an equidigital number, since it uses as much as digits as its factorization.

55225223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6000, while the sum is 26.

The square root of 55225223 is about 7431.3675053788. The cubic root of 55225223 is about 380.8136375219.

Adding to 55225223 its reverse (32252255), we get a palindrome (87477478).

The spelling of 55225223 in words is "fifty-five million, two hundred twenty-five thousand, two hundred twenty-three".