545215312 has 40 divisors (see below), whose sum is σ = 1095633000. Its totient is φ = 262520832.

The previous prime is 545215301. The next prime is 545215331. The reversal of 545215312 is 213512545.

It can be written as a sum of positive squares in 4 ways, for example, as 267126336 + 278088976 = 16344^2 + 16676^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207028 + ... + 209644.

It is an arithmetic number, because the mean of its divisors is an integer number (27390825).

Almost surely, 2^545215312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545215312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (547816500).

545215312 is an abundant number, since it is smaller than the sum of its proper divisors (550417688).

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

545215312 is a wasteful number, since it uses less digits than its factorization.

545215312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103 (or 3097 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 545215312 is about 23349.8460808631. The cubic root of 545215312 is about 816.9384707569.

Adding to 545215312 its reverse (213512545), we get a palindrome (758727857).

The spelling of 545215312 in words is "five hundred forty-five million, two hundred fifteen thousand, three hundred twelve".