555342444 has 18 divisors (see below), whose sum is σ = 1403782380. Its totient is φ = 185114136.

The previous prime is 555342433. The next prime is 555342457. The reversal of 555342444 is 444243555.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 15426179 = 555342444 / (5 + 5 + 5 + 3 + 4 + 2 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 555342399 and 555342408.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7713054 + ... + 7713125.

It is an arithmetic number, because the mean of its divisors is an integer number (77987910).

Almost surely, 2^555342444 is an apocalyptic number.

It is an amenable number.

555342444 is an abundant number, since it is smaller than the sum of its proper divisors (848439936).

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

555342444 is a wasteful number, since it uses less digits than its factorization.

555342444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15426189 (or 15426184 counting only the distinct ones).

The product of its digits is 192000, while the sum is 36.

The square root of 555342444 is about 23565.7048271423. The cubic root of 555342444 is about 821.9655623415.

Adding to 555342444 its reverse (444243555), we get a palindrome (999585999).

The spelling of 555342444 in words is "five hundred fifty-five million, three hundred forty-two thousand, four hundred forty-four".