7272281 has 4 divisors (see below), whose sum is σ = 7395600. Its totient is φ = 7148964.

The previous prime is 7272257. The next prime is 7272283. The reversal of 7272281 is 1822727.

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.

It is a cyclic number.

It is not a de Polignac number, because 7272281 - 2⁶ = 7272217 is a prime.

It is a super-2 number, since 2×7272281² = 105772141885922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7272283) 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, 61571 + ... + 61688.

It is an arithmetic number, because the mean of its divisors is an integer number (1848900).

Almost surely, 2^7272281 is an apocalyptic number.

It is an amenable number.

7272281 is a deficient number, since it is larger than the sum of its proper divisors (123319).

7272281 is a wasteful number, since it uses less digits than its factorization.

7272281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123318.

The product of its digits is 3136, while the sum is 29.

The square root of 7272281 is about 2696.7167074055. The cubic root of 7272281 is about 193.7418982391.

The spelling of 7272281 in words is "seven million, two hundred seventy-two thousand, two hundred eighty-one".