506188121 has 2 divisors, whose sum is σ = 506188122. Its totient is φ = 506188120.

The previous prime is 506188051. The next prime is 506188129. The reversal of 506188121 is 121881605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340808521 + 165379600 = 18461^2 + 12860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506188121 is a prime.

It is not a weakly prime, because it can be changed into another prime (506188129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253094060 + 253094061.

It is an arithmetic number, because the mean of its divisors is an integer number (253094061).

Almost surely, 2^506188121 is an apocalyptic number.

It is an amenable number.

506188121 is a deficient number, since it is larger than the sum of its proper divisors (1).

506188121 is an equidigital number, since it uses as much as digits as its factorization.

506188121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 506188121 is about 22498.6248690892. The cubic root of 506188121 is about 796.9614533418.

The spelling of 506188121 in words is "five hundred six million, one hundred eighty-eight thousand, one hundred twenty-one".