545212520 has 32 divisors (see below), whose sum is σ = 1233597600. Its totient is φ = 216863808.

The previous prime is 545212513. The next prime is 545212553. The reversal of 545212520 is 25212545.

It is a self number, because there is not a number n which added to its sum of digits gives 545212520.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30914 + ... + 45233.

It is an arithmetic number, because the mean of its divisors is an integer number (38549925).

Almost surely, 2^545212520 is an apocalyptic number.

It is an amenable number.

545212520 is an abundant number, since it is smaller than the sum of its proper divisors (688385080).

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

545212520 is a wasteful number, since it uses less digits than its factorization.

545212520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76337 (or 76333 counting only the distinct ones).

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

The square root of 545212520 is about 23349.7862945253. The cubic root of 545212520 is about 816.9370762643.

The spelling of 545212520 in words is "five hundred forty-five million, two hundred twelve thousand, five hundred twenty".