521062416 has 160 divisors (see below), whose sum is σ = 1755879680. Its totient is φ = 144820224.

The previous prime is 521062411. The next prime is 521062429. The reversal of 521062416 is 614260125.

521062416 is a `hidden beast` number, since 5 + 21 + 0 + 624 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 521062416.

It is not an unprimeable number, because it can be changed into a prime (521062411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109560 + ... + 114216.

It is an arithmetic number, because the mean of its divisors is an integer number (10974248).

Almost surely, 2^521062416 is an apocalyptic number.

521062416 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521062416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877939840).

521062416 is an abundant number, since it is smaller than the sum of its proper divisors (1234817264).

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

521062416 is a wasteful number, since it uses less digits than its factorization.

521062416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718 (or 4706 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 521062416 is about 22826.7916273838. The cubic root of 521062416 is about 804.6924308852.

The spelling of 521062416 in words is "five hundred twenty-one million, sixty-two thousand, four hundred sixteen".