521454 has 16 divisors (see below), whose sum is σ = 1050192. Its totient is φ = 172608.

The previous prime is 521447. The next prime is 521471. The reversal of 521454 is 454125.

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 521454.

It is a congruent number.

It is an unprimeable number.

521454 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 7 ways as a sum of consecutive naturals, for example, 1212 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (65637).

2⁵²¹⁴⁵⁴ is an apocalyptic number.

521454 is an abundant number, since it is smaller than the sum of its proper divisors (528738).

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

521454 is a wasteful number, since it uses less digits than its factorization.

521454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611.

The product of its digits is 800, while the sum is 21.

The square root of 521454 is about 722.1177189351. The cubic root of 521454 is about 80.4893958744.

Adding to 521454 its reverse (454125), we get a palindrome (975579).

The spelling of 521454 in words is "five hundred twenty-one thousand, four hundred fifty-four".