47545809 has 8 divisors (see below), whose sum is σ = 66731040. Its totient is φ = 30028896.

The previous prime is 47545793. The next prime is 47545829. The reversal of 47545809 is 90854574.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47545809 - 2⁴ = 47545793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47545829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417012 + ... + 417125.

It is an arithmetic number, because the mean of its divisors is an integer number (8341380).

Almost surely, 2^47545809 is an apocalyptic number.

It is an amenable number.

47545809 is a deficient number, since it is larger than the sum of its proper divisors (19185231).

47545809 is a wasteful number, since it uses less digits than its factorization.

47545809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834159.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 47545809 is about 6895.3469093295. The cubic root of 47545809 is about 362.2742064343.

The spelling of 47545809 in words is "forty-seven million, five hundred forty-five thousand, eight hundred nine".