506547561 has 16 divisors (see below), whose sum is σ = 758975616. Its totient is φ = 298167936.

The previous prime is 506547551. The next prime is 506547563. The reversal of 506547561 is 165745605.

It is not a de Polignac number, because 506547561 - 2¹⁷ = 506416489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (506547563) 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, 281460 + ... + 283253.

It is an arithmetic number, because the mean of its divisors is an integer number (47435976).

Almost surely, 2^506547561 is an apocalyptic number.

It is an amenable number.

506547561 is a deficient number, since it is larger than the sum of its proper divisors (252428055).

506547561 is a wasteful number, since it uses less digits than its factorization.

506547561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564752.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 506547561 is about 22506.6114952918. The cubic root of 506547561 is about 797.1500472890.

The spelling of 506547561 in words is "five hundred six million, five hundred forty-seven thousand, five hundred sixty-one".