47715487 has 2 divisors, whose sum is σ = 47715488. Its totient is φ = 47715486.

The previous prime is 47715467. The next prime is 47715511. The reversal of 47715487 is 78451774.

47715487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47715487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47715467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23857743 + 23857744.

It is an arithmetic number, because the mean of its divisors is an integer number (23857744).

Almost surely, 2^47715487 is an apocalyptic number.

47715487 is a deficient number, since it is larger than the sum of its proper divisors (1).

47715487 is an equidigital number, since it uses as much as digits as its factorization.

47715487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219520, while the sum is 43.

The square root of 47715487 is about 6907.6397560961. The cubic root of 47715487 is about 362.7046473471.

The spelling of 47715487 in words is "forty-seven million, seven hundred fifteen thousand, four hundred eighty-seven".