1320454555 has 16 divisors (see below), whose sum is σ = 1820111040. Its totient is φ = 900853632.

The previous prime is 1320454543. The next prime is 1320454567. The reversal of 1320454555 is 5554540231.

It is an interprime number because it is at equal distance from previous prime (1320454543) and next prime (1320454567).

It is not a de Polignac number, because 1320454555 - 2²⁹ = 783583643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320454555.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88860 + ... + 102649.

It is an arithmetic number, because the mean of its divisors is an integer number (113756940).

Almost surely, 2^1320454555 is an apocalyptic number.

1320454555 is a deficient number, since it is larger than the sum of its proper divisors (499656485).

1320454555 is a wasteful number, since it uses less digits than its factorization.

1320454555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191718.

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 1320454555 is about 36338.0593180208. The cubic root of 1320454555 is about 1097.0872125127.

Adding to 1320454555 its reverse (5554540231), we get a palindrome (6874994786).

The spelling of 1320454555 in words is "one billion, three hundred twenty million, four hundred fifty-four thousand, five hundred fifty-five".