55240401 has 8 divisors (see below), whose sum is σ = 74541600. Its totient is φ = 36383072.

The previous prime is 55240321. The next prime is 55240417. The reversal of 55240401 is 10404255.

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 55240401 - 2¹⁰ = 55239377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55240501) 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, 110676 + ... + 111173.

It is an arithmetic number, because the mean of its divisors is an integer number (9317700).

Almost surely, 2^55240401 is an apocalyptic number.

It is an amenable number.

55240401 is a deficient number, since it is larger than the sum of its proper divisors (19301199).

55240401 is a wasteful number, since it uses less digits than its factorization.

55240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221935.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 55240401 is about 7432.3886469963. The cubic root of 55240401 is about 380.8485217025.

Adding to 55240401 its reverse (10404255), we get a palindrome (65644656).

The spelling of 55240401 in words is "fifty-five million, two hundred forty thousand, four hundred one".