7875513 has 12 divisors (see below), whose sum is σ = 11421540. Its totient is φ = 5229216.

The previous prime is 7875467. The next prime is 7875551. The reversal of 7875513 is 3155787.

7875513 is a `hidden beast` number, since 78 + 75 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4678569 + 3196944 = 2163^2 + 1788^2 .

It is not a de Polignac number, because 7875513 - 2⁶ = 7875449 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7875563) 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 11 ways as a sum of consecutive naturals, for example, 795 + ... + 4047.

It is an arithmetic number, because the mean of its divisors is an integer number (951795).

Almost surely, 2^7875513 is an apocalyptic number.

It is an amenable number.

7875513 is a deficient number, since it is larger than the sum of its proper divisors (3546027).

7875513 is a wasteful number, since it uses less digits than its factorization.

7875513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528 (or 3525 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 7875513 is about 2806.3344419367. The cubic root of 7875513 is about 198.9571804203.

The spelling of 7875513 in words is "seven million, eight hundred seventy-five thousand, five hundred thirteen".