47161487 has 2 divisors, whose sum is σ = 47161488. Its totient is φ = 47161486.

The previous prime is 47161483. The next prime is 47161489. The reversal of 47161487 is 78416174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47161487 - 2² = 47161483 is a prime.

Together with 47161489, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47161487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47161481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23580743 + 23580744.

It is an arithmetic number, because the mean of its divisors is an integer number (23580744).

Almost surely, 2^47161487 is an apocalyptic number.

47161487 is a deficient number, since it is larger than the sum of its proper divisors (1).

47161487 is an equidigital number, since it uses as much as digits as its factorization.

47161487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 38.

The square root of 47161487 is about 6867.4221509967. The cubic root of 47161487 is about 361.2954536262.

The spelling of 47161487 in words is "forty-seven million, one hundred sixty-one thousand, four hundred eighty-seven".