47541809 has 12 divisors (see below), whose sum is σ = 58557924. Its totient is φ = 38352384.

The previous prime is 47541803. The next prime is 47541821. The reversal of 47541809 is 90814574.

It can be written as a sum of positive squares in 2 ways, for example, as 37173409 + 10368400 = 6097^2 + 3220^2 .

It is a de Polignac number, because none of the positive numbers 2^k-47541809 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 (47541803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27704 + ... + 29369.

It is an arithmetic number, because the mean of its divisors is an integer number (4879827).

Almost surely, 2^47541809 is an apocalyptic number.

47541809 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

47541809 is a deficient number, since it is larger than the sum of its proper divisors (11016115).

47541809 is a wasteful number, since it uses less digits than its factorization.

47541809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57104 (or 57097 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 47541809 is about 6895.0568525575. The cubic root of 47541809 is about 362.2640468465.

The spelling of 47541809 in words is "forty-seven million, five hundred forty-one thousand, eight hundred nine".