545409641 has 12 divisors (see below), whose sum is σ = 656335620. Its totient is φ = 451372320.

The previous prime is 545409619. The next prime is 545409647. The reversal of 545409641 is 146904545.

It can be written as a sum of positive squares in 2 ways, for example, as 324144016 + 221265625 = 18004^2 + 14875^2 .

It is not a de Polignac number, because 545409641 - 2⁶ = 545409577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545409595 and 545409604.

It is not an unprimeable number, because it can be changed into a prime (545409647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190490 + ... + 193331.

It is an arithmetic number, because the mean of its divisors is an integer number (54694635).

Almost surely, 2^545409641 is an apocalyptic number.

It is an amenable number.

545409641 is a deficient number, since it is larger than the sum of its proper divisors (110925979).

545409641 is a wasteful number, since it uses less digits than its factorization.

545409641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383864 (or 383857 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 545409641 is about 23354.0069581218. The cubic root of 545409641 is about 817.0355186417.

The spelling of 545409641 in words is "five hundred forty-five million, four hundred nine thousand, six hundred forty-one".