4971641 has 4 divisors (see below), whose sum is σ = 4976784. Its totient is φ = 4966500.

The previous prime is 4971587. The next prime is 4971643. The reversal of 4971641 is 1461794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4971641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4971598 and 4971607.

It is not an unprimeable number, because it can be changed into a prime (4971643) 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, 635 + ... + 3216.

It is an arithmetic number, because the mean of its divisors is an integer number (1244196).

Almost surely, 2^4971641 is an apocalyptic number.

It is an amenable number.

4971641 is a deficient number, since it is larger than the sum of its proper divisors (5143).

4971641 is a wasteful number, since it uses less digits than its factorization.

4971641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142.

The product of its digits is 6048, while the sum is 32.

The square root of 4971641 is about 2229.7176951354. The cubic root of 4971641 is about 170.6736934736.

The spelling of 4971641 in words is "four million, nine hundred seventy-one thousand, six hundred forty-one".