475511111 has 2 divisors, whose sum is σ = 475511112. Its totient is φ = 475511110.

The previous prime is 475511093. The next prime is 475511137. The reversal of 475511111 is 111115574.

It is an a-pointer prime, because the next prime (475511137) can be obtained adding 475511111 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 475511111 - 2¹⁴ = 475494727 is a prime.

It is a super-2 number, since 2×475511111² = 452221633368908642, which contains 22 as substring.

475511111 is a modest number, since divided by 11111 gives 4755 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475511711) 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, 237755555 + 237755556.

It is an arithmetic number, because the mean of its divisors is an integer number (237755556).

Almost surely, 2^475511111 is an apocalyptic number.

475511111 is a deficient number, since it is larger than the sum of its proper divisors (1).

475511111 is an equidigital number, since it uses as much as digits as its factorization.

475511111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 700, while the sum is 26.

The square root of 475511111 is about 21806.2172556361. The cubic root of 475511111 is about 780.5251290683.

Adding to 475511111 its reverse (111115574), we get a palindrome (586626685).

The spelling of 475511111 in words is "four hundred seventy-five million, five hundred eleven thousand, one hundred eleven".