517012240 has 40 divisors (see below), whose sum is σ = 1203048000. Its totient is φ = 206633856.

The previous prime is 517012219. The next prime is 517012241. The reversal of 517012240 is 42210715.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (517012241) 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, 146011 + ... + 149509.

It is an arithmetic number, because the mean of its divisors is an integer number (30076200).

Almost surely, 2^517012240 is an apocalyptic number.

It is an amenable number.

517012240 is an abundant number, since it is smaller than the sum of its proper divisors (686035760).

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

517012240 is a wasteful number, since it uses less digits than its factorization.

517012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5359 (or 5353 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 517012240 is about 22737.9031575033. The cubic root of 517012240 is about 802.6020690365.

Adding to 517012240 its reverse (42210715), we get a palindrome (559222955).

The spelling of 517012240 in words is "five hundred seventeen million, twelve thousand, two hundred forty".