1315522465 has 4 divisors (see below), whose sum is σ = 1578626964. Its totient is φ = 1052417968.

The previous prime is 1315522451. The next prime is 1315522471. The reversal of 1315522465 is 5642255131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153462544 + 1162059921 = 12388^2 + 34089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315522465 - 2⁷ = 1315522337 is a prime.

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 1315522465.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131552242 + ... + 131552251.

It is an arithmetic number, because the mean of its divisors is an integer number (394656741).

Almost surely, 2^1315522465 is an apocalyptic number.

It is an amenable number.

1315522465 is a deficient number, since it is larger than the sum of its proper divisors (263104499).

1315522465 is an equidigital number, since it uses as much as digits as its factorization.

1315522465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263104498.

The product of its digits is 36000, while the sum is 34.

The square root of 1315522465 is about 36270.1318580454. The cubic root of 1315522465 is about 1095.7195815107.

Adding to 1315522465 its reverse (5642255131), we get a palindrome (6957777596).

The spelling of 1315522465 in words is "one billion, three hundred fifteen million, five hundred twenty-two thousand, four hundred sixty-five".