47638651 has 2 divisors, whose sum is σ = 47638652. Its totient is φ = 47638650.

The previous prime is 47638649. The next prime is 47638663. The reversal of 47638651 is 15683674.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47638651 - 2¹ = 47638649 is a prime.

It is a super-3 number, since 3×47638651³ (a number of 24 digits) contains 333 as substring.

Together with 47638649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47638601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23819325 + 23819326.

It is an arithmetic number, because the mean of its divisors is an integer number (23819326).

Almost surely, 2^47638651 is an apocalyptic number.

47638651 is a deficient number, since it is larger than the sum of its proper divisors (1).

47638651 is an equidigital number, since it uses as much as digits as its factorization.

47638651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 47638651 is about 6902.0758471637. The cubic root of 47638651 is about 362.5098556179.

The spelling of 47638651 in words is "forty-seven million, six hundred thirty-eight thousand, six hundred fifty-one".