540145520 has 20 divisors (see below), whose sum is σ = 1255838520. Its totient is φ = 216058176.

The previous prime is 540145513. The next prime is 540145553. The reversal of 540145520 is 25541045.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 540145520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3375830 + ... + 3375989.

It is an arithmetic number, because the mean of its divisors is an integer number (62791926).

Almost surely, 2^540145520 is an apocalyptic number.

It is an amenable number.

540145520 is an abundant number, since it is smaller than the sum of its proper divisors (715693000).

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

540145520 is a wasteful number, since it uses less digits than its factorization.

540145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6751832 (or 6751826 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 540145520 is about 23241.0309581998. The cubic root of 540145520 is about 814.3984269368.

Adding to 540145520 its reverse (25541045), we get a palindrome (565686565).

The spelling of 540145520 in words is "five hundred forty million, one hundred forty-five thousand, five hundred twenty".