7271487 has 6 divisors (see below), whose sum is σ = 10503272. Its totient is φ = 4847652.

The previous prime is 7271483. The next prime is 7271497. The reversal of 7271487 is 7841727.

It is not a de Polignac number, because 7271487 - 2² = 7271483 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7271483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403963 + ... + 403980.

Almost surely, 2^7271487 is an apocalyptic number.

7271487 is a deficient number, since it is larger than the sum of its proper divisors (3231785).

7271487 is a wasteful number, since it uses less digits than its factorization.

7271487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807949 (or 807946 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 7271487 is about 2696.5694873302. The cubic root of 7271487 is about 193.7348469592.

The spelling of 7271487 in words is "seven million, two hundred seventy-one thousand, four hundred eighty-seven".