531006121 has 2 divisors, whose sum is σ = 531006122. Its totient is φ = 531006120.

The previous prime is 531006103. The next prime is 531006127. The reversal of 531006121 is 121600135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378730521 + 152275600 = 19461^2 + 12340^2 .

It is a cyclic number.

It is not a de Polignac number, because 531006121 - 2⁹ = 531005609 is a prime.

It is not a weakly prime, because it can be changed into another prime (531006127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265503060 + 265503061.

It is an arithmetic number, because the mean of its divisors is an integer number (265503061).

Almost surely, 2^531006121 is an apocalyptic number.

It is an amenable number.

531006121 is a deficient number, since it is larger than the sum of its proper divisors (1).

531006121 is an equidigital number, since it uses as much as digits as its factorization.

531006121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 531006121 is about 23043.5700576104. The cubic root of 531006121 is about 809.7789982855.

Adding to 531006121 its reverse (121600135), we get a palindrome (652606256).

The spelling of 531006121 in words is "five hundred thirty-one million, six thousand, one hundred twenty-one".