545584081 has 24 divisors (see below), whose sum is σ = 664191360. Its totient is φ = 446003712.

The previous prime is 545584079. The next prime is 545584087. The reversal of 545584081 is 180485545.

It is a happy number.

It is not a de Polignac number, because 545584081 - 2¹ = 545584079 is a prime.

It is a super-2 number, since 2×545584081² = 595323978881229122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (545584087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649860 + ... + 650698.

It is an arithmetic number, because the mean of its divisors is an integer number (27674640).

Almost surely, 2^545584081 is an apocalyptic number.

It is an amenable number.

545584081 is a deficient number, since it is larger than the sum of its proper divisors (118607279).

545584081 is a wasteful number, since it uses less digits than its factorization.

545584081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 40.

The square root of 545584081 is about 23357.7413505673. The cubic root of 545584081 is about 817.1226143298.

The spelling of 545584081 in words is "five hundred forty-five million, five hundred eighty-four thousand, eighty-one".