253363421 has 2 divisors, whose sum is σ = 253363422. Its totient is φ = 253363420.

The previous prime is 253363361. The next prime is 253363441. The reversal of 253363421 is 124363352.

253363421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224580196 + 28783225 = 14986^2 + 5365^2 .

It is a cyclic number.

It is not a de Polignac number, because 253363421 - 2¹⁴ = 253347037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253363441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126681710 + 126681711.

It is an arithmetic number, because the mean of its divisors is an integer number (126681711).

Almost surely, 2^253363421 is an apocalyptic number.

It is an amenable number.

253363421 is a deficient number, since it is larger than the sum of its proper divisors (1).

253363421 is an equidigital number, since it uses as much as digits as its factorization.

253363421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 253363421 is about 15917.3936622803. The cubic root of 253363421 is about 632.7730460930.

The spelling of 253363421 in words is "two hundred fifty-three million, three hundred sixty-three thousand, four hundred twenty-one".