55401 has 8 divisors (see below), whose sum is σ = 75360. Its totient is φ = 36192.

The previous prime is 55399. The next prime is 55411. The reversal of 55401 is 10455.

55401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55401 - 2¹ = 55399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55411) 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, 21 + ... + 333.

It is an arithmetic number, because the mean of its divisors is an integer number (9420).

2⁵⁵⁴⁰¹ is an apocalyptic number.

It is an amenable number.

55401 is a deficient number, since it is larger than the sum of its proper divisors (19959).

55401 is a wasteful number, since it uses less digits than its factorization.

55401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 55401 is about 235.3741702057. The cubic root of 55401 is about 38.1217241654.

Adding to 55401 its reverse (10455), we get a palindrome (65856).

The spelling of 55401 in words is "fifty-five thousand, four hundred one".