55402160 has 80 divisors (see below), whose sum is σ = 141767712. Its totient is φ = 19968000.

The previous prime is 55402159. The next prime is 55402163. The reversal of 55402160 is 6120455.

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 (55402163) 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, 137960 + ... + 138360.

Almost surely, 2^55402160 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 55402160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70883856).

55402160 is an abundant number, since it is smaller than the sum of its proper divisors (86365552).

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

55402160 is a wasteful number, since it uses less digits than its factorization.

55402160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 55402160 is about 7443.2627254451. The cubic root of 55402160 is about 381.2199023091.

The spelling of 55402160 in words is "fifty-five million, four hundred two thousand, one hundred sixty".