4545542272 has 64 divisors (see below), whose sum is σ = 9151309440. Its totient is φ = 2248888320.

The previous prime is 4545542249. The next prime is 4545542291. The reversal of 4545542272 is 2722455454.

It is a tau number, because it is divible by the number of its divisors (64).

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, 7203397 + ... + 7204027.

It is an arithmetic number, because the mean of its divisors is an integer number (142989210).

Almost surely, 2^4545542272 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 4545542272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4575654720).

4545542272 is an abundant number, since it is smaller than the sum of its proper divisors (4605767168).

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

4545542272 is a wasteful number, since it uses less digits than its factorization.

4545542272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1137 counting only the distinct ones).

The product of its digits is 448000, while the sum is 40.

The square root of 4545542272 is about 67420.6368406588. The cubic root of 4545542272 is about 1656.5144690441.

The spelling of 4545542272 in words is "four billion, five hundred forty-five million, five hundred forty-two thousand, two hundred seventy-two".