521463 has 8 divisors (see below), whose sum is σ = 702576. Its totient is φ = 344000.

The previous prime is 521447. The next prime is 521471. The reversal of 521463 is 364125.

It is a happy number.

521463 is nontrivially palindromic in base 16.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521463 - 2⁴ = 521447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (87822).

2⁵²¹⁴⁶³ is an apocalyptic number.

521463 is a deficient number, since it is larger than the sum of its proper divisors (181113).

521463 is a wasteful number, since it uses less digits than its factorization.

521463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825.

The product of its digits is 720, while the sum is 21.

The square root of 521463 is about 722.1239505791. The cubic root of 521463 is about 80.4898589388.

Adding to 521463 its reverse (364125), we get a palindrome (885588).

The spelling of 521463 in words is "five hundred twenty-one thousand, four hundred sixty-three".