506400111 has 12 divisors (see below), whose sum is σ = 835962192. Its totient is φ = 289371456.

The previous prime is 506400071. The next prime is 506400113. The reversal of 506400111 is 111004605.

It is not a de Polignac number, because 506400111 - 2²² = 502205807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506400113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4018986 + ... + 4019111.

It is an arithmetic number, because the mean of its divisors is an integer number (69663516).

Almost surely, 2^506400111 is an apocalyptic number.

506400111 is a deficient number, since it is larger than the sum of its proper divisors (329562081).

506400111 is a wasteful number, since it uses less digits than its factorization.

506400111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8038110 (or 8038107 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 506400111 is about 22503.3355527575. The cubic root of 506400111 is about 797.0726928014.

Adding to 506400111 its reverse (111004605), we get a palindrome (617404716).

The spelling of 506400111 in words is "five hundred six million, four hundred thousand, one hundred eleven".