517021712 has 10 divisors (see below), whose sum is σ = 1001729598. Its totient is φ = 258510848.

The previous prime is 517021649. The next prime is 517021763. The reversal of 517021712 is 217120715.

It can be written as a sum of positive squares in only one way, i.e., 434138896 + 82882816 = 20836^2 + 9104^2 .

It is a super-2 number, since 2×517021712² = 534622901358821888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16156913 + ... + 16156944.

Almost surely, 2^517021712 is an apocalyptic number.

It is an amenable number.

517021712 is a deficient number, since it is larger than the sum of its proper divisors (484707886).

517021712 is a wasteful number, since it uses less digits than its factorization.

517021712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32313865 (or 32313859 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 517021712 is about 22738.1114431256. Note that the first 3 decimals coincide. The cubic root of 517021712 is about 802.6069704037.

The spelling of 517021712 in words is "five hundred seventeen million, twenty-one thousand, seven hundred twelve".