475311917 has 2 divisors, whose sum is σ = 475311918. Its totient is φ = 475311916.

The previous prime is 475311913. The next prime is 475311919. The reversal of 475311917 is 719113574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370986121 + 104325796 = 19261^2 + 10214^2 .

It is a cyclic number.

It is not a de Polignac number, because 475311917 - 2² = 475311913 is a prime.

Together with 475311919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475311913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237655958 + 237655959.

It is an arithmetic number, because the mean of its divisors is an integer number (237655959).

Almost surely, 2^475311917 is an apocalyptic number.

It is an amenable number.

475311917 is a deficient number, since it is larger than the sum of its proper divisors (1).

475311917 is an equidigital number, since it uses as much as digits as its factorization.

475311917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 38.

The square root of 475311917 is about 21801.6494100790. The cubic root of 475311917 is about 780.4161252099.

The spelling of 475311917 in words is "four hundred seventy-five million, three hundred eleven thousand, nine hundred seventeen".