524421 has 8 divisors (see below), whose sum is σ = 776960. Its totient is φ = 349596.

The previous prime is 524413. The next prime is 524429. The reversal of 524421 is 124425.

It is an interprime number because it is at equal distance from previous prime (524413) and next prime (524429).

It is not a de Polignac number, because 524421 - 2³ = 524413 is a prime.

It is a Duffinian number.

524421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 524394 and 524403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (524429) 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, 9685 + ... + 9738.

It is an arithmetic number, because the mean of its divisors is an integer number (97120).

2⁵²⁴⁴²¹ is an apocalyptic number.

It is an amenable number.

524421 is a deficient number, since it is larger than the sum of its proper divisors (252539).

524421 is a wasteful number, since it uses less digits than its factorization.

524421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19432 (or 19426 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 524421 is about 724.1691791287. The cubic root of 524421 is about 80.6417650372.

Adding to 524421 its reverse (124425), we get a palindrome (648846).

The spelling of 524421 in words is "five hundred twenty-four thousand, four hundred twenty-one".