512545716 has 144 divisors (see below), whose sum is σ = 1422779904. Its totient is φ = 154948608.

The previous prime is 512545703. The next prime is 512545717. The reversal of 512545716 is 617545215.

It is a super-2 number, since 2×512545716² = 525406221979905312, which contains 22 as substring.

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

Its product of digits (42000) is a multiple of the sum of its prime factors (350).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512545717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2962606 + ... + 2962778.

It is an arithmetic number, because the mean of its divisors is an integer number (9880416).

Almost surely, 2^512545716 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 512545716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711389952).

512545716 is an abundant number, since it is smaller than the sum of its proper divisors (910234188).

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

512545716 is a wasteful number, since it uses less digits than its factorization.

512545716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 345 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 512545716 is about 22639.4725203570. The cubic root of 512545716 is about 800.2841261618.

The spelling of 512545716 in words is "five hundred twelve million, five hundred forty-five thousand, seven hundred sixteen".