7531264121 has 2 divisors, whose sum is σ = 7531264122. Its totient is φ = 7531264120.

The previous prime is 7531264087. The next prime is 7531264177. The reversal of 7531264121 is 1214621357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7133660521 + 397603600 = 84461^2 + 19940^2 .

It is a cyclic number.

It is not a de Polignac number, because 7531264121 - 2¹⁸ = 7531001977 is a prime.

It is not a weakly prime, because it can be changed into another prime (7531264021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765632060 + 3765632061.

It is an arithmetic number, because the mean of its divisors is an integer number (3765632061).

Almost surely, 2^7531264121 is an apocalyptic number.

It is an amenable number.

7531264121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7531264121 is an equidigital number, since it uses as much as digits as its factorization.

7531264121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 7531264121 is about 86782.8561468220. The cubic root of 7531264121 is about 1960.1499365550.

Adding to 7531264121 its reverse (1214621357), we get a palindrome (8745885478).

The spelling of 7531264121 in words is "seven billion, five hundred thirty-one million, two hundred sixty-four thousand, one hundred twenty-one".