1301553 has 12 divisors (see below), whose sum is σ = 2051088. Its totient is φ = 788760.

The previous prime is 1301551. The next prime is 1301561. The reversal of 1301553 is 3551031.

It is a happy number.

It is not a de Polignac number, because 1301553 - 2¹ = 1301551 is a prime.

1301553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1301551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6475 + ... + 6672.

It is an arithmetic number, because the mean of its divisors is an integer number (170924).

2^1301553 is an apocalyptic number.

It is an amenable number.

1301553 is a deficient number, since it is larger than the sum of its proper divisors (749535).

1301553 is a wasteful number, since it uses less digits than its factorization.

1301553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13164 (or 13161 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 1301553 is about 1140.8562573786. The cubic root of 1301553 is about 109.1827308360.

Adding to 1301553 its reverse (3551031), we get a palindrome (4852584).

The spelling of 1301553 in words is "one million, three hundred one thousand, five hundred fifty-three".