224019997 has 2 divisors, whose sum is σ = 224019998. Its totient is φ = 224019996.

The previous prime is 224019967. The next prime is 224020007. The reversal of 224019997 is 799910422.

224019997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158911236 + 65108761 = 12606^2 + 8069^2 .

It is a cyclic number.

It is not a de Polignac number, because 224019997 - 2¹¹ = 224017949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224019967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112009998 + 112009999.

It is an arithmetic number, because the mean of its divisors is an integer number (112009999).

Almost surely, 2^224019997 is an apocalyptic number.

It is an amenable number.

224019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

224019997 is an equidigital number, since it uses as much as digits as its factorization.

224019997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 224019997 is about 14967.2975850686. The cubic root of 224019997 is about 607.3358660605.

The spelling of 224019997 in words is "two hundred twenty-four million, nineteen thousand, nine hundred ninety-seven".