1316551 has 8 divisors (see below), whose sum is σ = 1363824. Its totient is φ = 1270080.

The previous prime is 1316537. The next prime is 1316591. The reversal of 1316551 is 1556131.

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 1316551 - 2⁵ = 1316519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6585 + ... + 6781.

It is an arithmetic number, because the mean of its divisors is an integer number (170478).

2^1316551 is an apocalyptic number.

1316551 is a deficient number, since it is larger than the sum of its proper divisors (47273).

1316551 is a wasteful number, since it uses less digits than its factorization.

1316551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its digits is 450, while the sum is 22.

The square root of 1316551 is about 1147.4105629634. The cubic root of 1316551 is about 109.6005068174.

The spelling of 1316551 in words is "one million, three hundred sixteen thousand, five hundred fifty-one".