47172141 has 6 divisors (see below), whose sum is σ = 68137550. Its totient is φ = 31448088.

The previous prime is 47172131. The next prime is 47172179. The reversal of 47172141 is 14127174.

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 19766916 = 5235^2 + 4446^2 .

It is not a de Polignac number, because 47172141 - 2⁹ = 47171629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47172131) 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, 2620666 + ... + 2620683.

Almost surely, 2^47172141 is an apocalyptic number.

It is an amenable number.

47172141 is a deficient number, since it is larger than the sum of its proper divisors (20965409).

47172141 is a wasteful number, since it uses less digits than its factorization.

47172141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241355 (or 5241352 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 47172141 is about 6868.1977985495. The cubic root of 47172141 is about 361.3226576875.

The spelling of 47172141 in words is "forty-seven million, one hundred seventy-two thousand, one hundred forty-one".