1320056651 has 4 divisors (see below), whose sum is σ = 1335961032. Its totient is φ = 1304152272.

The previous prime is 1320056629. The next prime is 1320056657. The reversal of 1320056651 is 1566500231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320056651 - 2⁶ = 1320056587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320056657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7952066 + ... + 7952231.

It is an arithmetic number, because the mean of its divisors is an integer number (333990258).

Almost surely, 2^1320056651 is an apocalyptic number.

1320056651 is a deficient number, since it is larger than the sum of its proper divisors (15904381).

1320056651 is an equidigital number, since it uses as much as digits as its factorization.

1320056651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15904380.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1320056651 is about 36332.5838745333. The cubic root of 1320056651 is about 1096.9770031800.

Adding to 1320056651 its reverse (1566500231), we get a palindrome (2886556882).

The spelling of 1320056651 in words is "one billion, three hundred twenty million, fifty-six thousand, six hundred fifty-one".