55529280 has 112 divisors (see below), whose sum is σ = 195925440. Its totient is φ = 14805504.

The previous prime is 55529273. The next prime is 55529281. The reversal of 55529280 is 8292555.

55529280 is a `hidden beast` number, since 55 + 529 + 2 + 80 = 666.

55529280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55529281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5427 + ... + 11853.

Almost surely, 2^55529280 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 55529280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97962720).

55529280 is an abundant number, since it is smaller than the sum of its proper divisors (140396160).

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

55529280 is a wasteful number, since it uses less digits than its factorization.

55529280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453 (or 6437 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 55529280 is about 7451.7970986870. The cubic root of 55529280 is about 381.5112486928.

The spelling of 55529280 in words is "fifty-five million, five hundred twenty-nine thousand, two hundred eighty".