545272 has 48 divisors (see below), whose sum is σ = 1292760. Its totient is φ = 213696.

The previous prime is 545267. The next prime is 545291. The reversal of 545272 is 272545.

It is an alternating number because its digits alternate between odd and even.

Its product of digits (2800) is a multiple of the sum of its prime factors (140).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5043 + ... + 5149.

2⁵⁴⁵²⁷² is an apocalyptic number.

545272 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646380).

545272 is an abundant number, since it is smaller than the sum of its proper divisors (747488).

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

545272 is a wasteful number, since it uses less digits than its factorization.

545272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 129 counting only the distinct ones).

The product of its digits is 2800, while the sum is 25.

The square root of 545272 is about 738.4253516775. The cubic root of 545272 is about 81.6966783121.

It can be divided in two parts, 545 and 272, that multiplied together give a triangular number (148240 = T₅₄₄).

The spelling of 545272 in words is "five hundred forty-five thousand, two hundred seventy-two".