555401 has 8 divisors (see below), whose sum is σ = 692544. Its totient is φ = 432720.

The previous prime is 555391. The next prime is 555419. The reversal of 555401 is 104555.

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

It is a cyclic number.

It is not a de Polignac number, because 555401 - 2⁶ = 555337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 555401.

It is not an unprimeable number, because it can be changed into a prime (555421) 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, 3530 + ... + 3683.

It is an arithmetic number, because the mean of its divisors is an integer number (86568).

2⁵⁵⁵⁴⁰¹ is an apocalyptic number.

It is an amenable number.

555401 is a deficient number, since it is larger than the sum of its proper divisors (137143).

555401 is a wasteful number, since it uses less digits than its factorization.

555401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 555401 is about 745.2523062695. The cubic root of 555401 is about 82.1994451018.

Adding to 555401 its reverse (104555), we get a palindrome (659956).

The spelling of 555401 in words is "five hundred fifty-five thousand, four hundred one".