55497760 has 48 divisors (see below), whose sum is σ = 133358400. Its totient is φ = 21819136.

The previous prime is 55497749. The next prime is 55497763. The reversal of 55497760 is 6779455.

It is not an unprimeable number, because it can be changed into a prime (55497763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6501 + ... + 12379.

It is an arithmetic number, because the mean of its divisors is an integer number (2778300).

Almost surely, 2^55497760 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 55497760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66679200).

55497760 is an abundant number, since it is smaller than the sum of its proper divisors (77860640).

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

55497760 is a wasteful number, since it uses less digits than its factorization.

55497760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953 (or 5945 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 55497760 is about 7449.6818724023. The cubic root of 55497760 is about 381.4390494821.

The spelling of 55497760 in words is "fifty-five million, four hundred ninety-seven thousand, seven hundred sixty".