7275129 has 4 divisors (see below), whose sum is σ = 9700176. Its totient is φ = 4850084.

The previous prime is 7275091. The next prime is 7275161. The reversal of 7275129 is 9215727.

7275129 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9215727 = 3 ⋅3071909.

It is a cyclic number.

It is not a de Polignac number, because 7275129 - 2⁷ = 7275001 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7275129.

It is not an unprimeable number, because it can be changed into a prime (7275529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1212519 + ... + 1212524.

It is an arithmetic number, because the mean of its divisors is an integer number (2425044).

Almost surely, 2^7275129 is an apocalyptic number.

It is an amenable number.

7275129 is a deficient number, since it is larger than the sum of its proper divisors (2425047).

7275129 is a wasteful number, since it uses less digits than its factorization.

7275129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425046.

The product of its digits is 8820, while the sum is 33.

The square root of 7275129 is about 2697.2447052502. The cubic root of 7275129 is about 193.7671862660.

The spelling of 7275129 in words is "seven million, two hundred seventy-five thousand, one hundred twenty-nine".