1315578241 has 8 divisors (see below), whose sum is σ = 1338090624. Its totient is φ = 1293176640.

The previous prime is 1315578233. The next prime is 1315578247. The reversal of 1315578241 is 1428755131.

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 1315578241 - 2³ = 1315578233 is a prime.

It is a super-2 number, since 2×1315578241² = 3461492216385308162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315578241.

It is not an unprimeable number, because it can be changed into a prime (1315578247) 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, 3565 + ... + 51418.

It is an arithmetic number, because the mean of its divisors is an integer number (167261328).

Almost surely, 2^1315578241 is an apocalyptic number.

It is an amenable number.

1315578241 is a deficient number, since it is larger than the sum of its proper divisors (22512383).

1315578241 is an equidigital number, since it uses as much as digits as its factorization.

1315578241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55391.

The product of its digits is 33600, while the sum is 37.

The square root of 1315578241 is about 36270.9007470176. The cubic root of 1315578241 is about 1095.7350668643.

The spelling of 1315578241 in words is "one billion, three hundred fifteen million, five hundred seventy-eight thousand, two hundred forty-one".