506123091 has 12 divisors (see below), whose sum is σ = 735294768. Its totient is φ = 335463984.

The previous prime is 506123071. The next prime is 506123117. The reversal of 506123091 is 190321605.

It is not a de Polignac number, because 506123091 - 2¹¹ = 506121043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506123021) 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, 160975 + ... + 164088.

It is an arithmetic number, because the mean of its divisors is an integer number (61274564).

Almost surely, 2^506123091 is an apocalyptic number.

506123091 is a deficient number, since it is larger than the sum of its proper divisors (229171677).

506123091 is a wasteful number, since it uses less digits than its factorization.

506123091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325242 (or 325239 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 506123091 is about 22497.1796232328. The cubic root of 506123091 is about 796.9273233279.

Adding to 506123091 its reverse (190321605), we get a palindrome (696444696).

The spelling of 506123091 in words is "five hundred six million, one hundred twenty-three thousand, ninety-one".