547561 has 16 divisors (see below), whose sum is σ = 691200. Its totient is φ = 422928.

The previous prime is 547559. The next prime is 547567. The reversal of 547561 is 165745.

547561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 547561 - 2¹ = 547559 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 (547567) 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, 2970 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (43200).

2⁵⁴⁷⁵⁶¹ is an apocalyptic number.

It is an amenable number.

547561 is a deficient number, since it is larger than the sum of its proper divisors (143639).

547561 is a wasteful number, since it uses less digits than its factorization.

547561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

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

The square root of 547561 is about 739.9736481794. The cubic root of 547561 is about 81.8108370137.

The spelling of 547561 in words is "five hundred forty-seven thousand, five hundred sixty-one".