47875617 has 18 divisors (see below), whose sum is σ = 71819618. Its totient is φ = 31912704.

The previous prime is 47875613. The next prime is 47875643. The reversal of 47875617 is 71657874.

47875617 is a `hidden beast` number, since 4 + 7 + 87 + 561 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37896336 + 9979281 = 6156^2 + 3159^2 .

It is not a de Polignac number, because 47875617 - 2² = 47875613 is a prime.

It is a super-4 number, since 4×47875617⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47875613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2913 + ... + 10209.

Almost surely, 2^47875617 is an apocalyptic number.

It is an amenable number.

47875617 is a deficient number, since it is larger than the sum of its proper divisors (23944001).

47875617 is an frugal number, since it uses more digits than its factorization.

47875617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7321 (or 7300 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 47875617 is about 6919.2208376377. The cubic root of 47875617 is about 363.1099318709.

It can be divided in two parts, 4787 and 5617, that added together give a square (10404 = 102²).

The spelling of 47875617 in words is "forty-seven million, eight hundred seventy-five thousand, six hundred seventeen".