545021340 has 48 divisors (see below), whose sum is σ = 1592414208. Its totient is φ = 139019584.

The previous prime is 545021339. The next prime is 545021371. The reversal of 545021340 is 43120545.

545021340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×545021340² = 594096522110791200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 545021340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196092 + ... + 198851.

It is an arithmetic number, because the mean of its divisors is an integer number (33175296).

Almost surely, 2^545021340 is an apocalyptic number.

It is an amenable number.

545021340 is an abundant number, since it is smaller than the sum of its proper divisors (1047392868).

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

545021340 is a wasteful number, since it uses less digits than its factorization.

545021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394978 (or 394976 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 545021340 is about 23345.6921079672. The cubic root of 545021340 is about 816.8415781584.

Adding to 545021340 its reverse (43120545), we get a palindrome (588141885).

The spelling of 545021340 in words is "five hundred forty-five million, twenty-one thousand, three hundred forty".