47965581 has 16 divisors (see below), whose sum is σ = 72227520. Its totient is φ = 31451760.

The previous prime is 47965549. The next prime is 47965591. The reversal of 47965581 is 18556974.

47965581 is a `hidden beast` number, since 4 + 7 + 9 + 65 + 581 = 666.

It is not a de Polignac number, because 47965581 - 2⁵ = 47965549 is a prime.

It is a super-2 number, since 2×47965581² = 4601393921335122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47965591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12915 + ... + 16208.

It is an arithmetic number, because the mean of its divisors is an integer number (4514220).

Almost surely, 2^47965581 is an apocalyptic number.

It is an amenable number.

47965581 is a deficient number, since it is larger than the sum of its proper divisors (24261939).

47965581 is a wasteful number, since it uses less digits than its factorization.

47965581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29193 (or 29187 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 47965581 is about 6925.7188074596. The cubic root of 47965581 is about 363.3372318597.

The spelling of 47965581 in words is "forty-seven million, nine hundred sixty-five thousand, five hundred eighty-one".