5147491 has 4 divisors (see below), whose sum is σ = 5166352. Its totient is φ = 5128632.

The previous prime is 5147479. The next prime is 5147497. The reversal of 5147491 is 1947415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1947415 = 5 ⋅389483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5147491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5147497) 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, 9015 + ... + 9568.

It is an arithmetic number, because the mean of its divisors is an integer number (1291588).

Almost surely, 2^5147491 is an apocalyptic number.

5147491 is a deficient number, since it is larger than the sum of its proper divisors (18861).

5147491 is a wasteful number, since it uses less digits than its factorization.

5147491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18860.

The product of its digits is 5040, while the sum is 31.

The square root of 5147491 is about 2268.8082774884. The cubic root of 5147491 is about 172.6627016344.

The spelling of 5147491 in words is "five million, one hundred forty-seven thousand, four hundred ninety-one".