55555522 has 16 divisors (see below), whose sum is σ = 91795392. Its totient is φ = 25006320.

The previous prime is 55555517. The next prime is 55555523. The reversal of 55555522 is 22555555.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55555523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9993 + ... + 14524.

It is an arithmetic number, because the mean of its divisors is an integer number (5737212).

Almost surely, 2^55555522 is an apocalyptic number.

55555522 is a deficient number, since it is larger than the sum of its proper divisors (36239870).

55555522 is a wasteful number, since it uses less digits than its factorization.

55555522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24633.

The product of its digits is 62500, while the sum is 34.

The square root of 55555522 is about 7453.5576740239. The cubic root of 55555522 is about 381.5713373614.

The spelling of 55555522 in words is "fifty-five million, five hundred fifty-five thousand, five hundred twenty-two".