6651253 has 4 divisors (see below), whose sum is σ = 7601440. Its totient is φ = 5701068.

The previous prime is 6651251. The next prime is 6651277. The reversal of 6651253 is 3521566.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3521566 = 2 ⋅1760783.

It is a cyclic number.

It is not a de Polignac number, because 6651253 - 2¹ = 6651251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475083 + ... + 475096.

It is an arithmetic number, because the mean of its divisors is an integer number (1900360).

Almost surely, 2^6651253 is an apocalyptic number.

It is an amenable number.

6651253 is a deficient number, since it is larger than the sum of its proper divisors (950187).

6651253 is an equidigital number, since it uses as much as digits as its factorization.

6651253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950186.

The product of its digits is 5400, while the sum is 28.

The square root of 6651253 is about 2579.0023264821. The cubic root of 6651253 is about 188.0620456895.

The spelling of 6651253 in words is "six million, six hundred fifty-one thousand, two hundred fifty-three".