55622844 has 36 divisors (see below), whose sum is σ = 148874544. Its totient is φ = 17450112.

The previous prime is 55622839. The next prime is 55622849. The reversal of 55622844 is 44822655.

It is a happy number.

55622844 is a `hidden beast` number, since 556 + 22 + 84 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (55622839) and next prime (55622849).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55622799 and 55622808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55622849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44832 + ... + 46055.

It is an arithmetic number, because the mean of its divisors is an integer number (4135404).

Almost surely, 2^55622844 is an apocalyptic number.

It is an amenable number.

55622844 is an abundant number, since it is smaller than the sum of its proper divisors (93251700).

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

55622844 is a wasteful number, since it uses less digits than its factorization.

55622844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90914 (or 90909 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 55622844 is about 7458.0724051192. The cubic root of 55622844 is about 381.7254041121.

The spelling of 55622844 in words is "fifty-five million, six hundred twenty-two thousand, eight hundred forty-four".