521274 has 32 divisors (see below), whose sum is σ = 1157184. Its totient is φ = 155520.

The previous prime is 521267. The next prime is 521281. The reversal of 521274 is 472125.

It is an interprime number because it is at equal distance from previous prime (521267) and next prime (521281).

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 521274.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521274.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3117 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (36162).

2⁵²¹²⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578592).

521274 is an abundant number, since it is smaller than the sum of its proper divisors (635910).

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

521274 is a wasteful number, since it uses less digits than its factorization.

521274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its digits is 560, while the sum is 21.

The square root of 521274 is about 721.9930747590. The cubic root of 521274 is about 80.4801334667.

Adding to 521274 its reverse (472125), we get a palindrome (993399).

It can be divided in two parts, 52 and 1274, that added together give a triangular number (1326 = T₅₁).

The spelling of 521274 in words is "five hundred twenty-one thousand, two hundred seventy-four".