540551220 has 48 divisors (see below), whose sum is σ = 1651140288. Its totient is φ = 131042560.

The previous prime is 540551177. The next prime is 540551281. The reversal of 540551220 is 22155045.

It is a happy number.

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, 408849 + ... + 410168.

It is an arithmetic number, because the mean of its divisors is an integer number (34398756).

Almost surely, 2^540551220 is an apocalyptic number.

It is an amenable number.

540551220 is an abundant number, since it is smaller than the sum of its proper divisors (1110589068).

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

540551220 is a wasteful number, since it uses less digits than its factorization.

540551220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819040 (or 819038 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 540551220 is about 23249.7574180893. The cubic root of 540551220 is about 814.6022724705.

The spelling of 540551220 in words is "five hundred forty million, five hundred fifty-one thousand, two hundred twenty".