545217084 has 72 divisors (see below), whose sum is σ = 1455293840. Its totient is φ = 171631872.

The previous prime is 545217083. The next prime is 545217107. The reversal of 545217084 is 480712545.

545217084 is a `hidden beast` number, since 54 + 521 + 7 + 0 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545217083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254064 + ... + 256200.

Almost surely, 2^545217084 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 545217084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (727646920).

545217084 is an abundant number, since it is smaller than the sum of its proper divisors (910076756).

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

545217084 is a wasteful number, since it uses less digits than its factorization.

545217084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539 (or 2534 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 545217084 is about 23349.8840254079. The cubic root of 545217084 is about 816.9393557977.

The spelling of 545217084 in words is "five hundred forty-five million, two hundred seventeen thousand, eighty-four".