511505480 has 32 divisors (see below), whose sum is σ = 1190575800. Its totient is φ = 197546496.

The previous prime is 511505471. The next prime is 511505483. The reversal of 511505480 is 84505115.

It can be written as a sum of positive squares in 4 ways, for example, as 405539044 + 105966436 = 20138^2 + 10294^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (511505483) 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, 219317 + ... + 221636.

Almost surely, 2^511505480 is an apocalyptic number.

It is an amenable number.

511505480 is an abundant number, since it is smaller than the sum of its proper divisors (679070320).

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

511505480 is a wasteful number, since it uses less digits than its factorization.

511505480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440993 (or 440989 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 511505480 is about 22616.4869066794. The cubic root of 511505480 is about 799.7423545324.

The spelling of 511505480 in words is "five hundred eleven million, five hundred five thousand, four hundred eighty".