47051919 has 6 divisors (see below), whose sum is σ = 67963896. Its totient is φ = 31367940.

The previous prime is 47051909. The next prime is 47051947. The reversal of 47051919 is 91915074.

It is a de Polignac number, because none of the positive numbers 2^k-47051919 is a prime.

It is a super-2 number, since 2×47051919² = 4427766163165122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47051909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2613987 + ... + 2614004.

It is an arithmetic number, because the mean of its divisors is an integer number (11327316).

Almost surely, 2^47051919 is an apocalyptic number.

47051919 is a deficient number, since it is larger than the sum of its proper divisors (20911977).

47051919 is a wasteful number, since it uses less digits than its factorization.

47051919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5227997 (or 5227994 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 47051919 is about 6859.4401375039. The cubic root of 47051919 is about 361.0154432560.

The spelling of 47051919 in words is "forty-seven million, fifty-one thousand, nine hundred nineteen".