545281272 has 24 divisors (see below), whose sum is σ = 1476803640. Its totient is φ = 181760400.

The previous prime is 545281259. The next prime is 545281291. The reversal of 545281272 is 272182545.

It is a happy number.

545281272 is a `hidden beast` number, since 5 + 4 + 528 + 127 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3786604 + ... + 3786747.

It is an arithmetic number, because the mean of its divisors is an integer number (61533485).

Almost surely, 2^545281272 is an apocalyptic number.

It is an amenable number.

545281272 is an abundant number, since it is smaller than the sum of its proper divisors (931522368).

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

545281272 is a wasteful number, since it uses less digits than its factorization.

545281272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573363 (or 7573356 counting only the distinct ones).

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

The square root of 545281272 is about 23351.2584671576. The cubic root of 545281272 is about 816.9714137597.

The spelling of 545281272 in words is "five hundred forty-five million, two hundred eighty-one thousand, two hundred seventy-two".