55550022 has 32 divisors (see below), whose sum is σ = 125383680. Its totient is φ = 16252320.

The previous prime is 55550021. The next prime is 55550029. The reversal of 55550022 is 22005555.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55549974 and 55550001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550021) 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, 12598 + ... + 16425.

It is an arithmetic number, because the mean of its divisors is an integer number (3918240).

Almost surely, 2^55550022 is an apocalyptic number.

55550022 is an abundant number, since it is smaller than the sum of its proper divisors (69833658).

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

55550022 is a wasteful number, since it uses less digits than its factorization.

55550022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29068.

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 55550022 is about 7453.1887135641. The cubic root of 55550022 is about 381.5587450841.

Adding to 55550022 its reverse (22005555), we get a palindrome (77555577).

The spelling of 55550022 in words is "fifty-five million, five hundred fifty thousand, twenty-two".