545537916 has 288 divisors, whose sum is σ = 1840430592. Its totient is φ = 137168640.

The previous prime is 545537893. The next prime is 545537933. The reversal of 545537916 is 619735545.

545537916 is a `hidden beast` number, since 5 + 4 + 553 + 7 + 91 + 6 = 666.

It is a super-2 number, since 2×545537916² = 595223235587246112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2769130 + ... + 2769326.

It is an arithmetic number, because the mean of its divisors is an integer number (6390384).

Almost surely, 2^545537916 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 545537916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (920215296).

545537916 is an abundant number, since it is smaller than the sum of its proper divisors (1294892676).

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

545537916 is a wasteful number, since it uses less digits than its factorization.

545537916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 257 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 545537916 is about 23356.7531133931. The cubic root of 545537916 is about 817.0995665352.

The spelling of 545537916 in words is "five hundred forty-five million, five hundred thirty-seven thousand, nine hundred sixteen".