72224003 has 2 divisors, whose sum is σ = 72224004. Its totient is φ = 72224002.

The previous prime is 72223999. The next prime is 72224023. The reversal of 72224003 is 30042227.

It is a happy number.

It is an a-pointer prime, because the next prime (72224023) can be obtained adding 72224003 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72224003 - 2² = 72223999 is a prime.

It is not a weakly prime, because it can be changed into another prime (72224023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36112001 + 36112002.

It is an arithmetic number, because the mean of its divisors is an integer number (36112002).

Almost surely, 2^72224003 is an apocalyptic number.

72224003 is a deficient number, since it is larger than the sum of its proper divisors (1).

72224003 is an equidigital number, since it uses as much as digits as its factorization.

72224003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 72224003 is about 8498.4706271187. The cubic root of 72224003 is about 416.4477485376.

The spelling of 72224003 in words is "seventy-two million, two hundred twenty-four thousand, three".