47161491 has 8 divisors (see below), whose sum is σ = 67719120. Its totient is φ = 29022432.

The previous prime is 47161489. The next prime is 47161493. The reversal of 47161491 is 19416174.

47161491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47161489) and next prime (47161493).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47161491 - 2¹ = 47161489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47161493) 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 in 7 ways as a sum of consecutive naturals, for example, 604596 + ... + 604673.

It is an arithmetic number, because the mean of its divisors is an integer number (8464890).

Almost surely, 2^47161491 is an apocalyptic number.

47161491 is a deficient number, since it is larger than the sum of its proper divisors (20557629).

47161491 is a wasteful number, since it uses less digits than its factorization.

47161491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209285.

The product of its digits is 6048, while the sum is 33.

The square root of 47161491 is about 6867.4224422268. The cubic root of 47161491 is about 361.2954638406.

The spelling of 47161491 in words is "forty-seven million, one hundred sixty-one thousand, four hundred ninety-one".