55841920 has 32 divisors (see below), whose sum is σ = 133498620. Its totient is φ = 22336512.

The previous prime is 55841873. The next prime is 55841927. The reversal of 55841920 is 2914855.

It can be written as a sum of positive squares in 2 ways, for example, as 52186176 + 3655744 = 7224^2 + 1912^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (55841927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42987 + ... + 44266.

Almost surely, 2^55841920 is an apocalyptic number.

It is an amenable number.

55841920 is an abundant number, since it is smaller than the sum of its proper divisors (77656700).

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

55841920 is an equidigital number, since it uses as much as digits as its factorization.

55841920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87272 (or 87260 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 55841920 is about 7472.7451448581. The cubic root of 55841920 is about 382.2259018535.

The spelling of 55841920 in words is "fifty-five million, eight hundred forty-one thousand, nine hundred twenty".