546105521 has 4 divisors (see below), whose sum is σ = 588113652. Its totient is φ = 504097392.

The previous prime is 546105479. The next prime is 546105523. The reversal of 546105521 is 125501645.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125501645 = 5 ⋅25100329.

It can be written as a sum of positive squares in 2 ways, for example, as 107412496 + 438693025 = 10364^2 + 20945^2 .

It is a cyclic number.

It is not a de Polignac number, because 546105521 - 2⁶ = 546105457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (546105523) 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, 21004046 + ... + 21004071.

It is an arithmetic number, because the mean of its divisors is an integer number (147028413).

Almost surely, 2^546105521 is an apocalyptic number.

It is an amenable number.

546105521 is a deficient number, since it is larger than the sum of its proper divisors (42008131).

546105521 is a wasteful number, since it uses less digits than its factorization.

546105521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42008130.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 546105521 is about 23368.9007229694. The cubic root of 546105521 is about 817.3828520953.

The spelling of 546105521 in words is "five hundred forty-six million, one hundred five thousand, five hundred twenty-one".