253543489 has 2 divisors, whose sum is σ = 253543490. Its totient is φ = 253543488.

The previous prime is 253543487. The next prime is 253543501. The reversal of 253543489 is 984345352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174689089 + 78854400 = 13217^2 + 8880^2 .

It is a cyclic number.

It is not a de Polignac number, because 253543489 - 2¹ = 253543487 is a prime.

Together with 253543487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (253543487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126771744 + 126771745.

It is an arithmetic number, because the mean of its divisors is an integer number (126771745).

Almost surely, 2^253543489 is an apocalyptic number.

It is an amenable number.

253543489 is a deficient number, since it is larger than the sum of its proper divisors (1).

253543489 is an equidigital number, since it uses as much as digits as its factorization.

253543489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 43.

The square root of 253543489 is about 15923.0489856685. The cubic root of 253543489 is about 632.9229167067.

The spelling of 253543489 in words is "two hundred fifty-three million, five hundred forty-three thousand, four hundred eighty-nine".