55225171 has 2 divisors, whose sum is σ = 55225172. Its totient is φ = 55225170.

The previous prime is 55225151. The next prime is 55225189. The reversal of 55225171 is 17152255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55225171 - 2²³ = 46836563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55225151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27612585 + 27612586.

It is an arithmetic number, because the mean of its divisors is an integer number (27612586).

Almost surely, 2^55225171 is an apocalyptic number.

55225171 is the 4291-st hex number.

55225171 is a deficient number, since it is larger than the sum of its proper divisors (1).

55225171 is an equidigital number, since it uses as much as digits as its factorization.

55225171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3500, while the sum is 28.

The square root of 55225171 is about 7431.3640066949. The cubic root of 55225171 is about 380.8135179974.

The spelling of 55225171 in words is "fifty-five million, two hundred twenty-five thousand, one hundred seventy-one".