55440022 has 24 divisors (see below), whose sum is σ = 91958328. Its totient is φ = 25048320.

The previous prime is 55440013. The next prime is 55440031. The reversal of 55440022 is 22004455.

It is an interprime number because it is at equal distance from previous prime (55440013) and next prime (55440031).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 55439975 and 55440002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46113 + ... + 47299.

It is an arithmetic number, because the mean of its divisors is an integer number (3831597).

Almost surely, 2^55440022 is an apocalyptic number.

55440022 is a deficient number, since it is larger than the sum of its proper divisors (36518306).

55440022 is a wasteful number, since it uses less digits than its factorization.

55440022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 55440022 is about 7445.8056649365. The cubic root of 55440022 is about 381.3067248035.

Adding to 55440022 its reverse (22004455), we get a palindrome (77444477).

The spelling of 55440022 in words is "fifty-five million, four hundred forty thousand, twenty-two".