47169561 has 16 divisors (see below), whose sum is σ = 64812800. Its totient is φ = 30492288.

The previous prime is 47169547. The next prime is 47169583. The reversal of 47169561 is 16596174.

It is not a de Polignac number, because 47169561 - 2⁷ = 47169433 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47169361) 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, 44880 + ... + 45918.

It is an arithmetic number, because the mean of its divisors is an integer number (4050800).

Almost surely, 2^47169561 is an apocalyptic number.

It is an amenable number.

47169561 is a deficient number, since it is larger than the sum of its proper divisors (17643239).

47169561 is a wasteful number, since it uses less digits than its factorization.

47169561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its digits is 45360, while the sum is 39.

The square root of 47169561 is about 6868.0099737843. The cubic root of 47169561 is about 361.3160702580.

The spelling of 47169561 in words is "forty-seven million, one hundred sixty-nine thousand, five hundred sixty-one".