7270145 has 4 divisors (see below), whose sum is σ = 8724180. Its totient is φ = 5816112.

The previous prime is 7270127. The next prime is 7270147. The reversal of 7270145 is 5410727.

7270145 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2053489 + 5216656 = 1433^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 7270145 - 2¹⁶ = 7204609 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7270147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727010 + ... + 727019.

It is an arithmetic number, because the mean of its divisors is an integer number (2181045).

Almost surely, 2^7270145 is an apocalyptic number.

It is an amenable number.

7270145 is a deficient number, since it is larger than the sum of its proper divisors (1454035).

7270145 is a wasteful number, since it uses less digits than its factorization.

7270145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454034.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 7270145 is about 2696.3206411701. The cubic root of 7270145 is about 193.7229278859.

The spelling of 7270145 in words is "seven million, two hundred seventy thousand, one hundred forty-five".