55474380 has 144 divisors (see below), whose sum is σ = 183578304. Its totient is φ = 13478400.

The previous prime is 55474301. The next prime is 55474403. The reversal of 55474380 is 8347455.

55474380 is a `hidden beast` number, since 554 + 74 + 38 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 353262 + ... + 353418.

Almost surely, 2^55474380 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 55474380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91789152).

55474380 is an abundant number, since it is smaller than the sum of its proper divisors (128103924).

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

55474380 is a wasteful number, since it uses less digits than its factorization.

55474380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 55474380 is about 7448.1125125766. The cubic root of 55474380 is about 381.3854779650.

The spelling of 55474380 in words is "fifty-five million, four hundred seventy-four thousand, three hundred eighty".