555424401 has 32 divisors (see below), whose sum is σ = 889620480. Its totient is φ = 301365504.

The previous prime is 555424399. The next prime is 555424423. The reversal of 555424401 is 104424555.

It is not a de Polignac number, because 555424401 - 2¹ = 555424399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (555424801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63001 + ... + 71273.

It is an arithmetic number, because the mean of its divisors is an integer number (27800640).

Almost surely, 2^555424401 is an apocalyptic number.

It is an amenable number.

555424401 is a deficient number, since it is larger than the sum of its proper divisors (334196079).

555424401 is a wasteful number, since it uses less digits than its factorization.

555424401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8445.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 555424401 is about 23567.4436670590. The cubic root of 555424401 is about 822.0059953624.

Adding to 555424401 its reverse (104424555), we get a palindrome (659848956).

The spelling of 555424401 in words is "five hundred fifty-five million, four hundred twenty-four thousand, four hundred one".