475561 has 4 divisors (see below), whose sum is σ = 488452. Its totient is φ = 462672.

The previous prime is 475549. The next prime is 475583. The reversal of 475561 is 165574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165574 = 2 ⋅82787.

It can be written as a sum of positive squares in 2 ways, for example, as 281961 + 193600 = 531^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 475561 - 2⁵ = 475529 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 (475511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6390 + ... + 6463.

It is an arithmetic number, because the mean of its divisors is an integer number (122113).

2⁴⁷⁵⁵⁶¹ is an apocalyptic number.

It is an amenable number.

475561 is a deficient number, since it is larger than the sum of its proper divisors (12891).

475561 is a wasteful number, since it uses less digits than its factorization.

475561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12890.

The product of its digits is 4200, while the sum is 28.

The square root of 475561 is about 689.6093096819. The cubic root of 475561 is about 78.0552424790.

The spelling of 475561 in words is "four hundred seventy-five thousand, five hundred sixty-one".