1024521 has 4 divisors (see below), whose sum is σ = 1366032. Its totient is φ = 683012.

The previous prime is 1024511. The next prime is 1024523. The reversal of 1024521 is 1254201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1024521 - 2¹⁷ = 893449 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1024521.

It is not an unprimeable number, because it can be changed into a prime (1024523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170751 + ... + 170756.

It is an arithmetic number, because the mean of its divisors is an integer number (341508).

2^1024521 is an apocalyptic number.

It is an amenable number.

1024521 is a deficient number, since it is larger than the sum of its proper divisors (341511).

1024521 is an equidigital number, since it uses as much as digits as its factorization.

1024521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341510.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1024521 is about 1012.1862476837. The cubic root of 1024521 is about 100.8107753346.

Adding to 1024521 its reverse (1254201), we get a palindrome (2278722).

It can be divided in two parts, 10 and 24521, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 1024521 in words is "one million, twenty-four thousand, five hundred twenty-one".