7131253 has 4 divisors (see below), whose sum is σ = 7305228. Its totient is φ = 6957280.

The previous prime is 7131217. The next prime is 7131259. The reversal of 7131253 is 3521317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3521317 = 149 ⋅23633.

It can be written as a sum of positive squares in 2 ways, for example, as 3359889 + 3771364 = 1833^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 7131253 - 2¹⁷ = 7000181 is a prime.

It is a Duffinian number.

7131253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131259) 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, 86926 + ... + 87007.

It is an arithmetic number, because the mean of its divisors is an integer number (1826307).

Almost surely, 2^7131253 is an apocalyptic number.

It is an amenable number.

7131253 is a deficient number, since it is larger than the sum of its proper divisors (173975).

7131253 is a wasteful number, since it uses less digits than its factorization.

7131253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173974.

The product of its digits is 630, while the sum is 22.

The square root of 7131253 is about 2670.4406003504. The cubic root of 7131253 is about 192.4813317479.

The spelling of 7131253 in words is "seven million, one hundred thirty-one thousand, two hundred fifty-three".