47211487 has 2 divisors, whose sum is σ = 47211488. Its totient is φ = 47211486.

The previous prime is 47211473. The next prime is 47211517. The reversal of 47211487 is 78411274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47211487 - 2¹¹ = 47209439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47211407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23605743 + 23605744.

It is an arithmetic number, because the mean of its divisors is an integer number (23605744).

Almost surely, 2^47211487 is an apocalyptic number.

47211487 is a deficient number, since it is larger than the sum of its proper divisors (1).

47211487 is an equidigital number, since it uses as much as digits as its factorization.

47211487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12544, while the sum is 34.

The square root of 47211487 is about 6871.0615628155. The cubic root of 47211487 is about 361.4230887905.

The spelling of 47211487 in words is "forty-seven million, two hundred eleven thousand, four hundred eighty-seven".