521417612 has 6 divisors (see below), whose sum is σ = 912480828. Its totient is φ = 260708804.

The previous prime is 521417573. The next prime is 521417629. The reversal of 521417612 is 216714125.

It is a super-2 number, since 2×521417612² = 543752652207565088, 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, 65177198 + ... + 65177205.

It is an arithmetic number, because the mean of its divisors is an integer number (152080138).

Almost surely, 2^521417612 is an apocalyptic number.

It is an amenable number.

521417612 is a deficient number, since it is larger than the sum of its proper divisors (391063216).

521417612 is a wasteful number, since it uses less digits than its factorization.

521417612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130354407 (or 130354405 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 521417612 is about 22834.5705455566. The cubic root of 521417612 is about 804.8752359914.

The spelling of 521417612 in words is "five hundred twenty-one million, four hundred seventeen thousand, six hundred twelve".