55267999 has 4 divisors (see below), whose sum is σ = 55442664. Its totient is φ = 55093336.

The previous prime is 55267991. The next prime is 55268023. The reversal of 55267999 is 99976255.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55267999 - 2³ = 55267991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55267991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86857 + ... + 87490.

It is an arithmetic number, because the mean of its divisors is an integer number (13860666).

Almost surely, 2^55267999 is an apocalyptic number.

55267999 is a deficient number, since it is larger than the sum of its proper divisors (174665).

55267999 is a wasteful number, since it uses less digits than its factorization.

55267999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174664.

The product of its digits is 1530900, while the sum is 52.

The square root of 55267999 is about 7434.2450188301. The cubic root of 55267999 is about 380.9119348773.

The spelling of 55267999 in words is "fifty-five million, two hundred sixty-seven thousand, nine hundred ninety-nine".