1316555 has 8 divisors (see below), whose sum is σ = 1601952. Its totient is φ = 1038528.

The previous prime is 1316537. The next prime is 1316591. The reversal of 1316555 is 5556131.

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

It is a cyclic number.

It is not a de Polignac number, because 1316555 - 2⁸ = 1316299 is a prime.

It is a Duffinian number.

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, 1439 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (200244).

2^1316555 is an apocalyptic number.

1316555 is a deficient number, since it is larger than the sum of its proper divisors (285397).

1316555 is an equidigital number, since it uses as much as digits as its factorization.

1316555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685.

The product of its digits is 2250, while the sum is 26.

The square root of 1316555 is about 1147.4123060173. The cubic root of 1316555 is about 109.6006178149.

It can be divided in two parts, 131 and 6555, that multiplied together give a triangular number (858705 = T₁₃₁₀).

The spelling of 1316555 in words is "one million, three hundred sixteen thousand, five hundred fifty-five".