7271997 has 4 divisors (see below), whose sum is σ = 9696000. Its totient is φ = 4847996.

The previous prime is 7271989. The next prime is 7272007. The reversal of 7271997 is 7991727.

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 7271997 - 2³ = 7271989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7271917) 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, 1211997 + ... + 1212002.

It is an arithmetic number, because the mean of its divisors is an integer number (2424000).

Almost surely, 2^7271997 is an apocalyptic number.

It is an amenable number.

7271997 is a deficient number, since it is larger than the sum of its proper divisors (2424003).

7271997 is a wasteful number, since it uses less digits than its factorization.

7271997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424002.

The product of its digits is 55566, while the sum is 42.

The square root of 7271997 is about 2696.6640502666. The cubic root of 7271997 is about 193.7393761778.

The spelling of 7271997 in words is "seven million, two hundred seventy-one thousand, nine hundred ninety-seven".