1320162553 has 8 divisors (see below), whose sum is σ = 1356299648. Its totient is φ = 1284049584.

The previous prime is 1320162527. The next prime is 1320162577. The reversal of 1320162553 is 3552610231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320162553 - 2²¹ = 1318065401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320112553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193600 + ... + 200302.

It is an arithmetic number, because the mean of its divisors is an integer number (169537456).

Almost surely, 2^1320162553 is an apocalyptic number.

It is an amenable number.

1320162553 is a deficient number, since it is larger than the sum of its proper divisors (36137095).

1320162553 is an equidigital number, since it uses as much as digits as its factorization.

1320162553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12063.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1320162553 is about 36334.0412423391. The cubic root of 1320162553 is about 1097.0063375150.

Adding to 1320162553 its reverse (3552610231), we get a palindrome (4872772784).

The spelling of 1320162553 in words is "one billion, three hundred twenty million, one hundred sixty-two thousand, five hundred fifty-three".