55364320 has 96 divisors (see below), whose sum is σ = 144789120. Its totient is φ = 19837440.

The previous prime is 55364299. The next prime is 55364327. The reversal of 55364320 is 2346355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55364327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145891 + ... + 146269.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^55364320 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 55364320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72394560).

55364320 is an abundant number, since it is smaller than the sum of its proper divisors (89424800).

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

55364320 is a wasteful number, since it uses less digits than its factorization.

55364320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 55364320 is about 7440.7203952306. The cubic root of 55364320 is about 381.1330907326.

The spelling of 55364320 in words is "fifty-five million, three hundred sixty-four thousand, three hundred twenty".