512545440 has 96 divisors (see below), whose sum is σ = 1761310656. Its totient is φ = 124252160.

The previous prime is 512545433. The next prime is 512545459. The reversal of 512545440 is 44545215.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 512545398 and 512545407.

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 15 ways as a sum of consecutive naturals, for example, 43257 + ... + 53816.

It is an arithmetic number, because the mean of its divisors is an integer number (18346986).

Almost surely, 2^512545440 is an apocalyptic number.

It is an amenable number.

512545440 is an abundant number, since it is smaller than the sum of its proper divisors (1248765216).

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

512545440 is a wasteful number, since it uses less digits than its factorization.

512545440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97102 (or 97094 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 512545440 is about 22639.4664248078. The cubic root of 512545440 is about 800.2839825138.

The spelling of 512545440 in words is "five hundred twelve million, five hundred forty-five thousand, four hundred forty".