509075220 has 24 divisors (see below), whose sum is σ = 1425410784. Its totient is φ = 135753376.

The previous prime is 509075201. The next prime is 509075221. The reversal of 509075220 is 22570905.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509075221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4242234 + ... + 4242353.

It is an arithmetic number, because the mean of its divisors is an integer number (59392116).

Almost surely, 2^509075220 is an apocalyptic number.

It is an amenable number.

509075220 is an abundant number, since it is smaller than the sum of its proper divisors (916335564).

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

509075220 is a wasteful number, since it uses less digits than its factorization.

509075220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8484599 (or 8484597 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 509075220 is about 22562.6953177141. The cubic root of 509075220 is about 798.4737672018.

The spelling of 509075220 in words is "five hundred nine million, seventy-five thousand, two hundred twenty".