521424112 has 20 divisors (see below), whose sum is σ = 1102101336. Its totient is φ = 237010880.

The previous prime is 521424103. The next prime is 521424121. The reversal of 521424112 is 211424125.

It is an interprime number because it is at equal distance from previous prime (521424103) and next prime (521424121).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481143 + ... + 1481494.

Almost surely, 2^521424112 is an apocalyptic number.

It is an amenable number.

521424112 is an abundant number, since it is smaller than the sum of its proper divisors (580677224).

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

521424112 is a wasteful number, since it uses less digits than its factorization.

521424112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962656 (or 2962650 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 521424112 is about 22834.7128731675. The cubic root of 521424112 is about 804.8785805065.

Adding to 521424112 its reverse (211424125), we get a palindrome (732848237).

The spelling of 521424112 in words is "five hundred twenty-one million, four hundred twenty-four thousand, one hundred twelve".