545621044 has 6 divisors (see below), whose sum is σ = 954836834. Its totient is φ = 272810520.

The previous prime is 545621033. The next prime is 545621077. The reversal of 545621044 is 440126545.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 542424100 + 3196944 = 23290^2 + 1788^2 .

It is a junction number, because it is equal to n+sod(n) for n = 545620997 and 545621015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68202627 + ... + 68202634.

Almost surely, 2^545621044 is an apocalyptic number.

It is an amenable number.

545621044 is a deficient number, since it is larger than the sum of its proper divisors (409215790).

545621044 is a wasteful number, since it uses less digits than its factorization.

545621044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136405265 (or 136405263 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 545621044 is about 23358.5325737727. The cubic root of 545621044 is about 817.1410671050.

Adding to 545621044 its reverse (440126545), we get a palindrome (985747589).

The spelling of 545621044 in words is "five hundred forty-five million, six hundred twenty-one thousand, forty-four".