546431561 has 8 divisors (see below), whose sum is σ = 623080584. Its totient is φ = 474727680.

The previous prime is 546431551. The next prime is 546431593. The reversal of 546431561 is 165134645.

It can be written as a sum of positive squares in 4 ways, for example, as 27457600 + 518973961 = 5240^2 + 22781^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 546431561 - 2¹⁰ = 546430537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (546431551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236050 + ... + 1236491.

It is an arithmetic number, because the mean of its divisors is an integer number (77885073).

Almost surely, 2^546431561 is an apocalyptic number.

It is an amenable number.

546431561 is a deficient number, since it is larger than the sum of its proper divisors (76649023).

546431561 is a wasteful number, since it uses less digits than its factorization.

546431561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472571.

The product of its digits is 43200, while the sum is 35.

The square root of 546431561 is about 23375.8756199634. The cubic root of 546431561 is about 817.5454864072.

The spelling of 546431561 in words is "five hundred forty-six million, four hundred thirty-one thousand, five hundred sixty-one".