5491647 has 24 divisors (see below), whose sum is σ = 9220640. Its totient is φ = 3084480.

The previous prime is 5491639. The next prime is 5491657. The reversal of 5491647 is 7461945.

5491647 is a `hidden beast` number, since 5 + 4 + 9 + 1 + 647 = 666.

It is not a de Polignac number, because 5491647 - 2³ = 5491639 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

5491647 is a modest number, since divided by 1647 gives 549 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5491657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3129 + ... + 4557.

Almost surely, 2^5491647 is an apocalyptic number.

5491647 is a deficient number, since it is larger than the sum of its proper divisors (3728993).

5491647 is a wasteful number, since it uses less digits than its factorization.

5491647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503 (or 1500 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 5491647 is about 2343.4263376518. The cubic root of 5491647 is about 176.4280108850.

The spelling of 5491647 in words is "five million, four hundred ninety-one thousand, six hundred forty-seven".