471551917 has 2 divisors, whose sum is σ = 471551918. Its totient is φ = 471551916.

The previous prime is 471551903. The next prime is 471551921. The reversal of 471551917 is 719155174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415915236 + 55636681 = 20394^2 + 7459^2 .

It is a cyclic number.

It is not a de Polignac number, because 471551917 - 2⁷ = 471551789 is a prime.

It is a super-2 number, since 2×471551917² = 444722420852749778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 471551917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (471551417) 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, 235775958 + 235775959.

It is an arithmetic number, because the mean of its divisors is an integer number (235775959).

Almost surely, 2^471551917 is an apocalyptic number.

It is an amenable number.

471551917 is a deficient number, since it is larger than the sum of its proper divisors (1).

471551917 is an equidigital number, since it uses as much as digits as its factorization.

471551917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 40.

The square root of 471551917 is about 21715.2461878745. The cubic root of 471551917 is about 778.3528230330.

The spelling of 471551917 in words is "four hundred seventy-one million, five hundred fifty-one thousand, nine hundred seventeen".