1007521 has 4 divisors (see below), whose sum is σ = 1015344. Its totient is φ = 999700.

The previous prime is 1007519. The next prime is 1007527. The reversal of 1007521 is 1257001.

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 1007521 - 2¹ = 1007519 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1007495 and 1007504.

It is not an unprimeable number, because it can be changed into a prime (1007527) 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, 3715 + ... + 3976.

It is an arithmetic number, because the mean of its divisors is an integer number (253836).

2^1007521 is an apocalyptic number.

It is an amenable number.

1007521 is a deficient number, since it is larger than the sum of its proper divisors (7823).

1007521 is an equidigital number, since it uses as much as digits as its factorization.

1007521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 1007521 is about 1003.7534557848. The cubic root of 1007521 is about 100.2500741081.

It can be divided in two parts, 10075 and 21, that multiplied together give a triangular number (211575 = T₆₅₀).

The spelling of 1007521 in words is "one million, seven thousand, five hundred twenty-one".