545140520 has 16 divisors (see below), whose sum is σ = 1226566260. Its totient is φ = 218056192.

The previous prime is 545140517. The next prime is 545140523. The reversal of 545140520 is 25041545.

It is an interprime number because it is at equal distance from previous prime (545140517) and next prime (545140523).

It can be written as a sum of positive squares in 2 ways, for example, as 541306756 + 3833764 = 23266^2 + 1958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 545140520.

It is not an unprimeable number, because it can be changed into a prime (545140523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6814217 + ... + 6814296.

Almost surely, 2^545140520 is an apocalyptic number.

It is an amenable number.

545140520 is an abundant number, since it is smaller than the sum of its proper divisors (681425740).

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

545140520 is a wasteful number, since it uses less digits than its factorization.

545140520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13628524 (or 13628520 counting only the distinct ones).

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

The square root of 545140520 is about 23348.2444736216. The cubic root of 545140520 is about 816.9011134934.

The spelling of 545140520 in words is "five hundred forty-five million, one hundred forty thousand, five hundred twenty".