55168231 has 2 divisors, whose sum is σ = 55168232. Its totient is φ = 55168230.

The previous prime is 55168219. The next prime is 55168241. The reversal of 55168231 is 13286155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55168231 - 2⁷ = 55168103 is a prime.

It is a super-2 number, since 2×55168231² = 6087067423338722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55168193 and 55168202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55168241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27584115 + 27584116.

It is an arithmetic number, because the mean of its divisors is an integer number (27584116).

Almost surely, 2^55168231 is an apocalyptic number.

55168231 is a deficient number, since it is larger than the sum of its proper divisors (1).

55168231 is an equidigital number, since it uses as much as digits as its factorization.

55168231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 55168231 is about 7427.5319588676. The cubic root of 55168231 is about 380.6825935302.

The spelling of 55168231 in words is "fifty-five million, one hundred sixty-eight thousand, two hundred thirty-one".