1301275555 has 4 divisors (see below), whose sum is σ = 1561530672. Its totient is φ = 1041020440.

The previous prime is 1301275537. The next prime is 1301275567. The reversal of 1301275555 is 5555721031.

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

It is a de Polignac number, because none of the positive numbers 2^k-1301275555 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1301275555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130127551 + ... + 130127560.

It is an arithmetic number, because the mean of its divisors is an integer number (390382668).

Almost surely, 2^1301275555 is an apocalyptic number.

1301275555 is a deficient number, since it is larger than the sum of its proper divisors (260255117).

1301275555 is an equidigital number, since it uses as much as digits as its factorization.

1301275555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260255116.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 1301275555 is about 36073.1971829501. The cubic root of 1301275555 is about 1091.7497232095.

Adding to 1301275555 its reverse (5555721031), we get a palindrome (6856996586).

The spelling of 1301275555 in words is "one billion, three hundred one million, two hundred seventy-five thousand, five hundred fifty-five".