1012521 has 16 divisors (see below), whose sum is σ = 1419264. Its totient is φ = 641424.

The previous prime is 1012519. The next prime is 1012523. The reversal of 1012521 is 1252101.

It is an interprime number because it is at equal distance from previous prime (1012519) and next prime (1012523).

It is not a de Polignac number, because 1012521 - 2¹ = 1012519 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

1012521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1012497 and 1012506.

It is not an unprimeable number, because it can be changed into a prime (1012523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5980 + ... + 6146.

It is an arithmetic number, because the mean of its divisors is an integer number (88704).

2^1012521 is an apocalyptic number.

It is an amenable number.

1012521 is a deficient number, since it is larger than the sum of its proper divisors (406743).

1012521 is a wasteful number, since it uses less digits than its factorization.

1012521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1012521 is about 1006.2410248047. The cubic root of 1012521 is about 100.4156367343.

Adding to 1012521 its reverse (1252101), we get a palindrome (2264622).

The spelling of 1012521 in words is "one million, twelve thousand, five hundred twenty-one".