1010521 has 4 divisors (see below), whose sum is σ = 1015092. Its totient is φ = 1005952.

The previous prime is 1010519. The next prime is 1010549. The reversal of 1010521 is 1250101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1250101 = 277 ⋅4513.

It can be written as a sum of positive squares in 2 ways, for example, as 81225 + 929296 = 285^2 + 964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010521 - 2¹ = 1010519 is a prime.

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

It is a Duffinian number.

1010521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1010498 and 1010507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (253773).

2^1010521 is an apocalyptic number.

It is an amenable number.

1010521 is a deficient number, since it is larger than the sum of its proper divisors (4571).

1010521 is an equidigital number, since it uses as much as digits as its factorization.

1010521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 1010521 is about 1005.2467358813. The cubic root of 1010521 is about 100.3494772339.

Adding to 1010521 its reverse (1250101), we get a palindrome (2260622).

The spelling of 1010521 in words is "one million, ten thousand, five hundred twenty-one".