1301201555 has 8 divisors (see below), whose sum is σ = 1564624944. Its totient is φ = 1038839200.

The previous prime is 1301201549. The next prime is 1301201591. The reversal of 1301201555 is 5551021031.

It is a happy number.

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

It is not a de Polignac number, because 1301201555 - 2²² = 1297007251 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 1301201555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262556 + ... + 267465.

It is an arithmetic number, because the mean of its divisors is an integer number (195578118).

Almost surely, 2^1301201555 is an apocalyptic number.

1301201555 is a deficient number, since it is larger than the sum of its proper divisors (263423389).

1301201555 is an equidigital number, since it uses as much as digits as its factorization.

1301201555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530517.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1301201555 is about 36072.1714760839. The cubic root of 1301201555 is about 1091.7290278719.

Adding to 1301201555 its reverse (5551021031), we get a palindrome (6852222586).

The spelling of 1301201555 in words is "one billion, three hundred one million, two hundred one thousand, five hundred fifty-five".