506506121 has 12 divisors (see below), whose sum is σ = 557789232. Its totient is φ = 459591000.

The previous prime is 506506103. The next prime is 506506127. The reversal of 506506121 is 121605605.

It is not a de Polignac number, because 506506121 - 2⁶ = 506506057 is a prime.

It is a super-2 number, since 2×506506121² = 513096901220933282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (506506127) 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, 65426 + ... + 72756.

It is an arithmetic number, because the mean of its divisors is an integer number (46482436).

Almost surely, 2^506506121 is an apocalyptic number.

It is an amenable number.

506506121 is a deficient number, since it is larger than the sum of its proper divisors (51283111).

506506121 is a wasteful number, since it uses less digits than its factorization.

506506121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7924 (or 7913 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 506506121 is about 22505.6908580919. The cubic root of 506506121 is about 797.1283087585.

The spelling of 506506121 in words is "five hundred six million, five hundred six thousand, one hundred twenty-one".