7567272121 has 2 divisors, whose sum is σ = 7567272122. Its totient is φ = 7567272120.

The previous prime is 7567272103. The next prime is 7567272197. The reversal of 7567272121 is 1212727657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7555955625 + 11316496 = 86925^2 + 3364^2 .

It is a cyclic number.

It is not a de Polignac number, because 7567272121 - 2¹⁹ = 7566747833 is a prime.

It is not a weakly prime, because it can be changed into another prime (7567272821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3783636060 + 3783636061.

It is an arithmetic number, because the mean of its divisors is an integer number (3783636061).

Almost surely, 2^7567272121 is an apocalyptic number.

It is an amenable number.

7567272121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7567272121 is an equidigital number, since it uses as much as digits as its factorization.

7567272121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320, while the sum is 40.

The square root of 7567272121 is about 86990.0690941213. The cubic root of 7567272121 is about 1963.2688857645.

Adding to 7567272121 its reverse (1212727657), we get a palindrome (8779999778).

The spelling of 7567272121 in words is "seven billion, five hundred sixty-seven million, two hundred seventy-two thousand, one hundred twenty-one".