55172267 has 2 divisors, whose sum is σ = 55172268. Its totient is φ = 55172266.

The previous prime is 55172233. The next prime is 55172269. The reversal of 55172267 is 76227155.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55172267 - 2¹² = 55168171 is a prime.

Together with 55172269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55172269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27586133 + 27586134.

It is an arithmetic number, because the mean of its divisors is an integer number (27586134).

Almost surely, 2^55172267 is an apocalyptic number.

55172267 is a deficient number, since it is larger than the sum of its proper divisors (1).

55172267 is an equidigital number, since it uses as much as digits as its factorization.

55172267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 35.

The square root of 55172267 is about 7427.8036457623. The cubic root of 55172267 is about 380.6918766354.

The spelling of 55172267 in words is "fifty-five million, one hundred seventy-two thousand, two hundred sixty-seven".