512155980 has 192 divisors, whose sum is σ = 1834721280. Its totient is φ = 116183808.

The previous prime is 512155967. The next prime is 512156027. The reversal of 512155980 is 89551215.

It is a happy number.

512155980 is a `hidden beast` number, since 5 + 1 + 21 + 559 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 593029 + ... + 593891.

It is an arithmetic number, because the mean of its divisors is an integer number (9555840).

Almost surely, 2^512155980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512155980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917360640).

512155980 is an abundant number, since it is smaller than the sum of its proper divisors (1322565300).

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

512155980 is a wasteful number, since it uses less digits than its factorization.

512155980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The square root of 512155980 is about 22630.8634391178. The cubic root of 512155980 is about 800.0812313349.

The spelling of 512155980 in words is "five hundred twelve million, one hundred fifty-five thousand, nine hundred eighty".