5181647 has 4 divisors (see below), whose sum is σ = 5406960. Its totient is φ = 4956336.

The previous prime is 5181641. The next prime is 5181653. The reversal of 5181647 is 7461815.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5181641) and next prime (5181653).

It is a cyclic number.

It is not a de Polignac number, because 5181647 - 2⁸ = 5181391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181641) 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, 112622 + ... + 112667.

It is an arithmetic number, because the mean of its divisors is an integer number (1351740).

Almost surely, 2^5181647 is an apocalyptic number.

5181647 is a deficient number, since it is larger than the sum of its proper divisors (225313).

5181647 is a wasteful number, since it uses less digits than its factorization.

5181647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225312.

The product of its digits is 6720, while the sum is 32.

The square root of 5181647 is about 2276.3231317192. The cubic root of 5181647 is about 173.0437591867.

The spelling of 5181647 in words is "five million, one hundred eighty-one thousand, six hundred forty-seven".