1315851 has 8 divisors (see below), whose sum is σ = 1857744. Its totient is φ = 825600.

The previous prime is 1315849. The next prime is 1315861. The reversal of 1315851 is 1585131.

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

It is not a de Polignac number, because 1315851 - 2¹ = 1315849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12850 + ... + 12951.

It is an arithmetic number, because the mean of its divisors is an integer number (232218).

2^1315851 is an apocalyptic number.

1315851 is a deficient number, since it is larger than the sum of its proper divisors (541893).

1315851 is a wasteful number, since it uses less digits than its factorization.

1315851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25821.

The product of its digits is 600, while the sum is 24.

The square root of 1315851 is about 1147.1054877386. The cubic root of 1315851 is about 109.5810787927.

The spelling of 1315851 in words is "one million, three hundred fifteen thousand, eight hundred fifty-one".