47381585 has 4 divisors (see below), whose sum is σ = 56857908. Its totient is φ = 37905264.

The previous prime is 47381557. The next prime is 47381603. The reversal of 47381585 is 58518374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8456464 + 38925121 = 2908^2 + 6239^2 .

It is a cyclic number.

It is not a de Polignac number, because 47381585 - 2²² = 43187281 is a prime.

It is a super-2 number, since 2×47381585² = 4490029194224450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4738154 + ... + 4738163.

It is an arithmetic number, because the mean of its divisors is an integer number (14214477).

Almost surely, 2^47381585 is an apocalyptic number.

It is an amenable number.

47381585 is a deficient number, since it is larger than the sum of its proper divisors (9476323).

47381585 is an equidigital number, since it uses as much as digits as its factorization.

47381585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476322.

The product of its digits is 134400, while the sum is 41.

The square root of 47381585 is about 6883.4282882877. The cubic root of 47381585 is about 361.8566249471.

The spelling of 47381585 in words is "forty-seven million, three hundred eighty-one thousand, five hundred eighty-five".