7987253 has 2 divisors, whose sum is σ = 7987254. Its totient is φ = 7987252.

The previous prime is 7987249. The next prime is 7987289. The reversal of 7987253 is 3527897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7606564 + 380689 = 2758^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 7987253 - 2² = 7987249 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7987253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7987223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3993626 + 3993627.

It is an arithmetic number, because the mean of its divisors is an integer number (3993627).

Almost surely, 2^7987253 is an apocalyptic number.

It is an amenable number.

7987253 is a deficient number, since it is larger than the sum of its proper divisors (1).

7987253 is an equidigital number, since it uses as much as digits as its factorization.

7987253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 7987253 is about 2826.1728538785. The cubic root of 7987253 is about 199.8937185313.

The spelling of 7987253 in words is "seven million, nine hundred eighty-seven thousand, two hundred fifty-three".