545147240 has 128 divisors (see below), whose sum is σ = 1432944000. Its totient is φ = 184550400.

The previous prime is 545147231. The next prime is 545147243. The reversal of 545147240 is 42741545.

It is a junction number, because it is equal to n+sod(n) for n = 545147197 and 545147206.

It is not an unprimeable number, because it can be changed into a prime (545147243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509426 + ... + 510494.

It is an arithmetic number, because the mean of its divisors is an integer number (11194875).

Almost surely, 2^545147240 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 545147240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716472000).

545147240 is an abundant number, since it is smaller than the sum of its proper divisors (887796760).

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

545147240 is a wasteful number, since it uses less digits than its factorization.

545147240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 545147240 is about 23348.3883812138. The cubic root of 545147240 is about 816.9044701526.

Adding to 545147240 its reverse (42741545), we get a palindrome (587888785).

The spelling of 545147240 in words is "five hundred forty-five million, one hundred forty-seven thousand, two hundred forty".