7216457 has 8 divisors (see below), whose sum is σ = 7565184. Its totient is φ = 6870688.

The previous prime is 7216453. The next prime is 7216471. The reversal of 7216457 is 7546127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7216457 - 2² = 7216453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7216453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5453 + ... + 6645.

It is an arithmetic number, because the mean of its divisors is an integer number (945648).

Almost surely, 2^7216457 is an apocalyptic number.

It is an amenable number.

7216457 is a deficient number, since it is larger than the sum of its proper divisors (348727).

7216457 is a wasteful number, since it uses less digits than its factorization.

7216457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479.

The product of its digits is 11760, while the sum is 32.

The square root of 7216457 is about 2686.3464035749. The cubic root of 7216457 is about 193.2448858869.

The spelling of 7216457 in words is "seven million, two hundred sixteen thousand, four hundred fifty-seven".