47171481 has 32 divisors (see below), whose sum is σ = 76573440. Its totient is φ = 25214976.

The previous prime is 47171479. The next prime is 47171489. The reversal of 47171481 is 18417174.

It is not a de Polignac number, because 47171481 - 2¹ = 47171479 is a prime.

It is a super-2 number, since 2×47171481² = 4450297239466722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47171489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81465 + ... + 82041.

It is an arithmetic number, because the mean of its divisors is an integer number (2392920).

Almost surely, 2^47171481 is an apocalyptic number.

It is an amenable number.

47171481 is a deficient number, since it is larger than the sum of its proper divisors (29401959).

47171481 is a wasteful number, since it uses less digits than its factorization.

47171481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833.

The product of its digits is 6272, while the sum is 33.

The square root of 47171481 is about 6868.1497508427. The cubic root of 47171481 is about 361.3209725540.

The spelling of 47171481 in words is "forty-seven million, one hundred seventy-one thousand, four hundred eighty-one".