6224431555 has 4 divisors (see below), whose sum is σ = 7469317872. Its totient is φ = 4979545240.

The previous prime is 6224431553. The next prime is 6224431571. The reversal of 6224431555 is 5551344226.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6224431555 - 2¹ = 6224431553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6224431553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622443151 + ... + 622443160.

It is an arithmetic number, because the mean of its divisors is an integer number (1867329468).

Almost surely, 2^6224431555 is an apocalyptic number.

6224431555 is a deficient number, since it is larger than the sum of its proper divisors (1244886317).

6224431555 is a wasteful number, since it uses less digits than its factorization.

6224431555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244886316.

The product of its digits is 144000, while the sum is 37.

The square root of 6224431555 is about 78895.0667342388. The cubic root of 6224431555 is about 1839.5004506943.

The spelling of 6224431555 in words is "six billion, two hundred twenty-four million, four hundred thirty-one thousand, five hundred fifty-five".