7272961 has 4 divisors (see below), whose sum is σ = 7282132. Its totient is φ = 7263792.

The previous prime is 7272943. The next prime is 7272971. The reversal of 7272961 is 1692727.

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 3920400 + 3352561 = 1980^2 + 1831^2 .

It is a cyclic number.

It is not a de Polignac number, because 7272961 - 2⁵ = 7272929 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7272911) 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, 3270 + ... + 5023.

It is an arithmetic number, because the mean of its divisors is an integer number (1820533).

Almost surely, 2^7272961 is an apocalyptic number.

It is an amenable number.

7272961 is a deficient number, since it is larger than the sum of its proper divisors (9171).

7272961 is an equidigital number, since it uses as much as digits as its factorization.

7272961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170.

The product of its digits is 10584, while the sum is 34.

The square root of 7272961 is about 2696.8427837010. The cubic root of 7272961 is about 193.7479367106.

The spelling of 7272961 in words is "seven million, two hundred seventy-two thousand, nine hundred sixty-one".