55228855 has 8 divisors (see below), whose sum is σ = 72299664. Its totient is φ = 40166400.

The previous prime is 55228843. The next prime is 55228889. The reversal of 55228855 is 55882255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55228855 - 2¹⁹ = 54704567 is a prime.

It is a super-2 number, since 2×55228855² = 6100452849222050, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502026 + ... + 502135.

It is an arithmetic number, because the mean of its divisors is an integer number (9037458).

Almost surely, 2^55228855 is an apocalyptic number.

55228855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55228855 is a deficient number, since it is larger than the sum of its proper divisors (17070809).

55228855 is a wasteful number, since it uses less digits than its factorization.

55228855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004177.

The product of its digits is 160000, while the sum is 40.

The square root of 55228855 is about 7431.6118709201. The cubic root of 55228855 is about 380.8219856688.

The spelling of 55228855 in words is "fifty-five million, two hundred twenty-eight thousand, eight hundred fifty-five".