55229171 has 2 divisors, whose sum is σ = 55229172. Its totient is φ = 55229170.

The previous prime is 55229159. The next prime is 55229177. The reversal of 55229171 is 17192255.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55229171 is a prime.

It is a super-2 number, since 2×55229171² = 6100522658694482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55229177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27614585 + 27614586.

It is an arithmetic number, because the mean of its divisors is an integer number (27614586).

Almost surely, 2^55229171 is an apocalyptic number.

55229171 is a deficient number, since it is larger than the sum of its proper divisors (1).

55229171 is an equidigital number, since it uses as much as digits as its factorization.

55229171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

The square root of 55229171 is about 7431.6331314187. The cubic root of 55229171 is about 380.8227119770.

The spelling of 55229171 in words is "fifty-five million, two hundred twenty-nine thousand, one hundred seventy-one".