253788253 has 4 divisors (see below), whose sum is σ = 255640860. Its totient is φ = 251935648.

The previous prime is 253788191. The next prime is 253788259. The reversal of 253788253 is 352887352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68773849 + 185014404 = 8293^2 + 13602^2 .

It is a cyclic number.

It is not a de Polignac number, because 253788253 - 2¹³ = 253780061 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 (253788259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926098 + ... + 926371.

It is an arithmetic number, because the mean of its divisors is an integer number (63910215).

Almost surely, 2^253788253 is an apocalyptic number.

It is an amenable number.

253788253 is a deficient number, since it is larger than the sum of its proper divisors (1852607).

253788253 is a wasteful number, since it uses less digits than its factorization.

253788253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852606.

The product of its digits is 403200, while the sum is 43.

The square root of 253788253 is about 15930.7329712101. The cubic root of 253788253 is about 633.1265200692.

Subtracting 253788253 from its reverse (352887352), we obtain a palindrome (99099099).

The spelling of 253788253 in words is "two hundred fifty-three million, seven hundred eighty-eight thousand, two hundred fifty-three".