1283775523 has 2 divisors, whose sum is σ = 1283775524. Its totient is φ = 1283775522.

The previous prime is 1283775511. The next prime is 1283775529. The reversal of 1283775523 is 3255773821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3255773821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1283775523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1283775523.

It is not a weakly prime, because it can be changed into another prime (1283775529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641887761 + 641887762.

It is an arithmetic number, because the mean of its divisors is an integer number (641887762).

Almost surely, 2^1283775523 is an apocalyptic number.

1283775523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283775523 is an equidigital number, since it uses as much as digits as its factorization.

1283775523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 1283775523 is about 35829.8133263348. The cubic root of 1283775523 is about 1086.8335348000.

The spelling of 1283775523 in words is "one billion, two hundred eighty-three million, seven hundred seventy-five thousand, five hundred twenty-three".