216257003 has 2 divisors, whose sum is σ = 216257004. Its totient is φ = 216257002.

The previous prime is 216256991. The next prime is 216257029. The reversal of 216257003 is 300752612.

It is an a-pointer prime, because the next prime (216257029) can be obtained adding 216257003 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216257003 - 2⁴ = 216256987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216257033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108128501 + 108128502.

It is an arithmetic number, because the mean of its divisors is an integer number (108128502).

Almost surely, 2^216257003 is an apocalyptic number.

216257003 is a deficient number, since it is larger than the sum of its proper divisors (1).

216257003 is an equidigital number, since it uses as much as digits as its factorization.

216257003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 216257003 is about 14705.6792770684. The cubic root of 216257003 is about 600.2378714236.

The spelling of 216257003 in words is "two hundred sixteen million, two hundred fifty-seven thousand, three".