55636480 has 80 divisors (see below), whose sum is σ = 135330624. Its totient is φ = 21934080.

The previous prime is 55636459. The next prime is 55636487. The reversal of 55636480 is 8463655.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (55636487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263575 + ... + 263785.

Almost surely, 2^55636480 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 55636480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67665312).

55636480 is an abundant number, since it is smaller than the sum of its proper divisors (79694144).

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

55636480 is a wasteful number, since it uses less digits than its factorization.

55636480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 55636480 is about 7458.9865263318. The cubic root of 55636480 is about 381.7565950278.

The spelling of 55636480 in words is "fifty-five million, six hundred thirty-six thousand, four hundred eighty".