1361361255 has 16 divisors (see below), whose sum is σ = 2185056864. Its totient is φ = 723766400.

The previous prime is 1361361247. The next prime is 1361361263. The reversal of 1361361255 is 5521631631.

It is an interprime number because it is at equal distance from previous prime (1361361247) and next prime (1361361263).

It is not a de Polignac number, because 1361361255 - 2³ = 1361361247 is a prime.

It is a congruent number.

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, 138396 + ... + 147905.

It is an arithmetic number, because the mean of its divisors is an integer number (136566054).

Almost surely, 2^1361361255 is an apocalyptic number.

1361361255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1361361255 is a deficient number, since it is larger than the sum of its proper divisors (823695609).

1361361255 is a wasteful number, since it uses less digits than its factorization.

1361361255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286626.

The product of its digits is 16200, while the sum is 33.

The square root of 1361361255 is about 36896.6293175949. The cubic root of 1361361255 is about 1108.3011794367.

Adding to 1361361255 its reverse (5521631631), we get a palindrome (6882992886).

The spelling of 1361361255 in words is "one billion, three hundred sixty-one million, three hundred sixty-one thousand, two hundred fifty-five".