1299553 has 2 divisors, whose sum is σ = 1299554. Its totient is φ = 1299552.

The previous prime is 1299541. The next prime is 1299583. The reversal of 1299553 is 3559921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216609 + 82944 = 1103^2 + 288^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299553 - 2⁹ = 1299041 is a prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (1299533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649776 + 649777.

It is an arithmetic number, because the mean of its divisors is an integer number (649777).

2^1299553 is an apocalyptic number.

It is an amenable number.

1299553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299553 is an equidigital number, since it uses as much as digits as its factorization.

1299553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 34.

The square root of 1299553 is about 1139.9793857785. The cubic root of 1299553 is about 109.1267778306.

The spelling of 1299553 in words is "one million, two hundred ninety-nine thousand, five hundred fifty-three".