472215811 has 2 divisors, whose sum is σ = 472215812. Its totient is φ = 472215810.

The previous prime is 472215803. The next prime is 472215833. The reversal of 472215811 is 118512274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 472215811 - 2³ = 472215803 is a prime.

It is not a weakly prime, because it can be changed into another prime (472215841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236107905 + 236107906.

It is an arithmetic number, because the mean of its divisors is an integer number (236107906).

Almost surely, 2^472215811 is an apocalyptic number.

472215811 is a deficient number, since it is larger than the sum of its proper divisors (1).

472215811 is an equidigital number, since it uses as much as digits as its factorization.

472215811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 31.

The square root of 472215811 is about 21730.5271680187. The cubic root of 472215811 is about 778.7179305525.

The spelling of 472215811 in words is "four hundred seventy-two million, two hundred fifteen thousand, eight hundred eleven".