545138544 has 20 divisors (see below), whose sum is σ = 1408274696. Its totient is φ = 181712832.

The previous prime is 545138543. The next prime is 545138551. The reversal of 545138544 is 445831545.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545138543) 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, 5678479 + ... + 5678574.

Almost surely, 2^545138544 is an apocalyptic number.

It is an amenable number.

545138544 is an abundant number, since it is smaller than the sum of its proper divisors (863136152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545138544 is a wasteful number, since it uses less digits than its factorization.

545138544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11357064 (or 11357058 counting only the distinct ones).

The product of its digits is 192000, while the sum is 39.

The square root of 545138544 is about 23348.2021577680. The cubic root of 545138544 is about 816.9001264705.

The spelling of 545138544 in words is "five hundred forty-five million, one hundred thirty-eight thousand, five hundred forty-four".