224971555 has 4 divisors (see below), whose sum is σ = 269965872. Its totient is φ = 179977240.

The previous prime is 224971547. The next prime is 224971559. The reversal of 224971555 is 555179422.

It is a happy number.

224971555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 224971555 - 2³ = 224971547 is a prime.

It is a super-2 number, since 2×224971555² = 101224401118236050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224971559) 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, 22497151 + ... + 22497160.

It is an arithmetic number, because the mean of its divisors is an integer number (67491468).

Almost surely, 2^224971555 is an apocalyptic number.

224971555 is a deficient number, since it is larger than the sum of its proper divisors (44994317).

224971555 is an equidigital number, since it uses as much as digits as its factorization.

224971555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44994316.

The product of its digits is 126000, while the sum is 40.

The square root of 224971555 is about 14999.0518033641. The cubic root of 224971555 is about 608.1945676274.

The spelling of 224971555 in words is "two hundred twenty-four million, nine hundred seventy-one thousand, five hundred fifty-five".