545574240 has 144 divisors (see below), whose sum is σ = 1892597616. Its totient is φ = 143078400.

The previous prime is 545574199. The next prime is 545574241. The reversal of 545574240 is 42475545.

It is a happy number.

545574240 is a `hidden beast` number, since 5 + 45 + 574 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a junction number, because it is equal to n+sod(n) for n = 545574195 and 545574204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545574241) 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, 84735 + ... + 90945.

It is an arithmetic number, because the mean of its divisors is an integer number (13143039).

Almost surely, 2^545574240 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 545574240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (946298808).

545574240 is an abundant number, since it is smaller than the sum of its proper divisors (1347023376).

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

545574240 is a wasteful number, since it uses less digits than its factorization.

545574240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293 (or 6282 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 36.

The square root of 545574240 is about 23357.5306914066. The cubic root of 545574240 is about 817.1177013370.

The spelling of 545574240 in words is "five hundred forty-five million, five hundred seventy-four thousand, two hundred forty".