55474027920 has 240 divisors, whose sum is σ = 196300977600. Its totient is φ = 14000532480.

The previous prime is 55474027909. The next prime is 55474027997. The reversal of 55474027920 is 2972047455.

55474027920 is a `hidden beast` number, since 554 + 7 + 4 + 0 + 2 + 7 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25457391 + ... + 25459569.

It is an arithmetic number, because the mean of its divisors is an integer number (817920740).

Almost surely, 2^55474027920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55474027920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98150488800).

55474027920 is an abundant number, since it is smaller than the sum of its proper divisors (140826949680).

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

55474027920 is a wasteful number, since it uses less digits than its factorization.

55474027920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078 (or 4069 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

It can be divided in two parts, 554740 and 27920, that added together give a triangular number (582660 = T₁₀₇₉).

The spelling of 55474027920 in words is "fifty-five billion, four hundred seventy-four million, twenty-seven thousand, nine hundred twenty".