47651 has 4 divisors (see below), whose sum is σ = 50472. Its totient is φ = 44832.

The previous prime is 47639. The next prime is 47653. The reversal of 47651 is 15674.

47651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 47651 - 2¹⁴ = 31267 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47651.

It is not an unprimeable number, because it can be changed into a prime (47653) 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, 1385 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (12618).

2⁴⁷⁶⁵¹ is an apocalyptic number.

47651 is a deficient number, since it is larger than the sum of its proper divisors (2821).

47651 is a wasteful number, since it uses less digits than its factorization.

47651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820.

The product of its digits is 840, while the sum is 23.

The square root of 47651 is about 218.2910900610. The cubic root of 47651 is about 36.2541176456.

Adding to 47651 its sum of digits (23), we get a palindrome (47674).

The spelling of 47651 in words is "forty-seven thousand, six hundred fifty-one".