47641509 has 6 divisors (see below), whose sum is σ = 68815526. Its totient is φ = 31761000.

The previous prime is 47641499. The next prime is 47641511. The reversal of 47641509 is 90514674.

47641509 is a `hidden beast` number, since 4 + 7 + 641 + 5 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47568609 + 72900 = 6897^2 + 270^2 .

It is not a de Polignac number, because 47641509 - 2¹⁵ = 47608741 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 (47641109) 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, 2646742 + ... + 2646759.

Almost surely, 2^47641509 is an apocalyptic number.

It is an amenable number.

47641509 is a deficient number, since it is larger than the sum of its proper divisors (21174017).

47641509 is a wasteful number, since it uses less digits than its factorization.

47641509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293507 (or 5293504 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 47641509 is about 6902.2828832206. The cubic root of 47641509 is about 362.5171048607.

The spelling of 47641509 in words is "forty-seven million, six hundred forty-one thousand, five hundred nine".