253213771 has 2 divisors, whose sum is σ = 253213772. Its totient is φ = 253213770.

The previous prime is 253213687. The next prime is 253213783. The reversal of 253213771 is 177312352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253213771 - 2¹⁹ = 252689483 is a prime.

It is not a weakly prime, because it can be changed into another prime (253211771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126606885 + 126606886.

It is an arithmetic number, because the mean of its divisors is an integer number (126606886).

Almost surely, 2^253213771 is an apocalyptic number.

253213771 is a deficient number, since it is larger than the sum of its proper divisors (1).

253213771 is an equidigital number, since it uses as much as digits as its factorization.

253213771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 31.

The square root of 253213771 is about 15912.6921355250. The cubic root of 253213771 is about 632.6484383445.

It can be divided in two parts, 25321 and 3771, that added together give a palindrome (29092).

The spelling of 253213771 in words is "two hundred fifty-three million, two hundred thirteen thousand, seven hundred seventy-one".