1315641 has 8 divisors (see below), whose sum is σ = 1784160. Its totient is φ = 862112.

The previous prime is 1315637. The next prime is 1315651. The reversal of 1315641 is 1465131.

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 1315641 - 2² = 1315637 is a prime.

It is a super-2 number, since 2×1315641² = 3461822481762, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1315621) 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, 3540 + ... + 3893.

It is an arithmetic number, because the mean of its divisors is an integer number (223020).

2^1315641 is an apocalyptic number.

It is an amenable number.

1315641 is a deficient number, since it is larger than the sum of its proper divisors (468519).

1315641 is an equidigital number, since it uses as much as digits as its factorization.

1315641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7495.

The product of its digits is 360, while the sum is 21.

The square root of 1315641 is about 1147.0139493485. The cubic root of 1315641 is about 109.5752490418.

Multiplying 1315641 by its sum of digits (21), we get a triangular number (27628461 = T₇₄₃₃).

The spelling of 1315641 in words is "one million, three hundred fifteen thousand, six hundred forty-one".