521072 has 20 divisors (see below), whose sum is σ = 1045320. Its totient is φ = 251328.

The previous prime is 521063. The next prime is 521107. The reversal of 521072 is 270125.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 521072.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521072.

It is an unprimeable number.

521072 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (52266).

2⁵²¹⁰⁷² is an apocalyptic number.

It is an amenable number.

521072 is an abundant number, since it is smaller than the sum of its proper divisors (524248).

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

521072 is a wasteful number, since it uses less digits than its factorization.

521072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1154 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 521072 is about 721.8531706656. The cubic root of 521072 is about 80.4697364475.

Adding to 521072 its reverse (270125), we get a palindrome (791197).

The spelling of 521072 in words is "five hundred twenty-one thousand, seventy-two".