72230903 has 2 divisors, whose sum is σ = 72230904. Its totient is φ = 72230902.

The previous prime is 72230897. The next prime is 72230923. The reversal of 72230903 is 30903227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72230903 - 2⁶ = 72230839 is a prime.

It is equal to p_4241573 and since 72230903 and 4241573 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72230923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36115451 + 36115452.

It is an arithmetic number, because the mean of its divisors is an integer number (36115452).

Almost surely, 2^72230903 is an apocalyptic number.

72230903 is a deficient number, since it is larger than the sum of its proper divisors (1).

72230903 is an equidigital number, since it uses as much as digits as its factorization.

72230903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 72230903 is about 8498.8765728183. The cubic root of 72230903 is about 416.4610100473.

The spelling of 72230903 in words is "seventy-two million, two hundred thirty thousand, nine hundred three".