55505226 has 32 divisors (see below), whose sum is σ = 129967488. Its totient is φ = 15471360.

The previous prime is 55505207. The next prime is 55505227. The reversal of 55505226 is 62250555.

It is a super-2 number, since 2×55505226² = 6161660226622152, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 55505193 and 55505202.

It is not an unprimeable number, because it can be changed into a prime (55505227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14395 + ... + 17838.

It is an arithmetic number, because the mean of its divisors is an integer number (4061484).

Almost surely, 2^55505226 is an apocalyptic number.

55505226 is an abundant number, since it is smaller than the sum of its proper divisors (74462262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55505226 is a wasteful number, since it uses less digits than its factorization.

55505226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32286.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 55505226 is about 7450.1829507738. The cubic root of 55505226 is about 381.4561534532.

The spelling of 55505226 in words is "fifty-five million, five hundred five thousand, two hundred twenty-six".