55000022 has 32 divisors (see below), whose sum is σ = 108276480. Its totient is φ = 20299680.

The previous prime is 55000013. The next prime is 55000027. The reversal of 55000022 is 22000055.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 54999970 and 55000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000027) 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, 6473 + ... + 12324.

It is an arithmetic number, because the mean of its divisors is an integer number (3383640).

Almost surely, 2^55000022 is an apocalyptic number.

55000022 is a deficient number, since it is larger than the sum of its proper divisors (53276458).

55000022 is a wasteful number, since it uses less digits than its factorization.

55000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18836.

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 55000022 is about 7416.1999703352. The cubic root of 55000022 is about 380.2952967822.

Adding to 55000022 its reverse (22000055), we get a palindrome (77000077).

The spelling of 55000022 in words is "fifty-five million, twenty-two", and thus it is an aban number and an uban number.