1009513 has 6 divisors (see below), whose sum is σ = 1033706. Its totient is φ = 985872.

The previous prime is 1009507. The next prime is 1009531. The reversal of 1009513 is 3159001.

It can be written as a sum of positive squares in only one way, i.e., 974169 + 35344 = 987^2 + 188^2 .

It is not a de Polignac number, because 1009513 - 2¹³ = 1001321 is a prime.

It is a Duffinian number.

1009513 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009573) 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 5 ways as a sum of consecutive naturals, for example, 1981 + ... + 2437.

2^1009513 is an apocalyptic number.

It is an amenable number.

1009513 is a deficient number, since it is larger than the sum of its proper divisors (24193).

1009513 is an frugal number, since it uses more digits than its factorization.

1009513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 1009513 is about 1004.7452413423. The cubic root of 1009513 is about 100.3160997566.

The spelling of 1009513 in words is "one million, nine thousand, five hundred thirteen".