517227240 has 32 divisors (see below), whose sum is σ = 1551682080. Its totient is φ = 137927232.

The previous prime is 517227239. The next prime is 517227313. The reversal of 517227240 is 42722715.

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 = 517227198 and 517227207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154994 + ... + 2155233.

It is an arithmetic number, because the mean of its divisors is an integer number (48490065).

Almost surely, 2^517227240 is an apocalyptic number.

It is an amenable number.

517227240 is an abundant number, since it is smaller than the sum of its proper divisors (1034454840).

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

517227240 is a wasteful number, since it uses less digits than its factorization.

517227240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310241 (or 4310237 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 517227240 is about 22742.6304547209. The cubic root of 517227240 is about 802.7133078799.

Adding to 517227240 its reverse (42722715), we get a palindrome (559949955).

The spelling of 517227240 in words is "five hundred seventeen million, two hundred twenty-seven thousand, two hundred forty".