7998253 has 8 divisors (see below), whose sum is σ = 8291448. Its totient is φ = 7709184.

The previous prime is 7998223. The next prime is 7998269. The reversal of 7998253 is 3528997.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1857769 + 6140484 = 1363^2 + 2478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7998253 - 2⁹ = 7997741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7998223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3225 + ... + 5137.

It is an arithmetic number, because the mean of its divisors is an integer number (1036431).

Almost surely, 2^7998253 is an apocalyptic number.

It is an amenable number.

7998253 is a deficient number, since it is larger than the sum of its proper divisors (293195).

7998253 is a wasteful number, since it uses less digits than its factorization.

7998253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063.

The product of its digits is 136080, while the sum is 43.

The square root of 7998253 is about 2828.1182789975. The cubic root of 7998253 is about 199.9854406068.

The spelling of 7998253 in words is "seven million, nine hundred ninety-eight thousand, two hundred fifty-three".