5661471 has 8 divisors (see below), whose sum is σ = 7672624. Its totient is φ = 3712320.

The previous prime is 5661457. The next prime is 5661497. The reversal of 5661471 is 1741665.

5661471 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 5661471 - 2⁷ = 5661343 is a prime.

It is a super-3 number, since 3×5661471³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15286 + ... + 15651.

It is an arithmetic number, because the mean of its divisors is an integer number (959078).

Almost surely, 2^5661471 is an apocalyptic number.

5661471 is a deficient number, since it is larger than the sum of its proper divisors (2011153).

5661471 is a wasteful number, since it uses less digits than its factorization.

5661471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31001.

The product of its digits is 5040, while the sum is 30.

The square root of 5661471 is about 2379.3845842991. The cubic root of 5661471 is about 178.2282032902.

The spelling of 5661471 in words is "five million, six hundred sixty-one thousand, four hundred seventy-one".