561477 has 8 divisors (see below), whose sum is σ = 855616. Its totient is φ = 320832.

The previous prime is 561461. The next prime is 561521. The reversal of 561477 is 774165.

It is a happy number.

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

It is not a de Polignac number, because 561477 - 2⁴ = 561461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561477.

It is not an unprimeable number, because it can be changed into a prime (561277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13348 + ... + 13389.

It is an arithmetic number, because the mean of its divisors is an integer number (106952).

2⁵⁶¹⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

561477 is a deficient number, since it is larger than the sum of its proper divisors (294139).

561477 is a wasteful number, since it uses less digits than its factorization.

561477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26747.

The product of its digits is 5880, while the sum is 30.

The square root of 561477 is about 749.3176896350. The cubic root of 561477 is about 82.4981083129.

The spelling of 561477 in words is "five hundred sixty-one thousand, four hundred seventy-seven".