315252569 has 8 divisors (see below), whose sum is σ = 317387880. Its totient is φ = 313122816.

The previous prime is 315252557. The next prime is 315252583. The reversal of 315252569 is 965252513.

It can be written as a sum of positive squares in 4 ways, for example, as 12544 + 315240025 = 112^2 + 17755^2 .

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 315252569 - 2²⁰ = 314203993 is a prime.

It is a super-2 number, since 2×315252569² = 198768364522199522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315252589) 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, 210977 + ... + 212465.

It is an arithmetic number, because the mean of its divisors is an integer number (39673485).

Almost surely, 2^315252569 is an apocalyptic number.

It is an amenable number.

315252569 is a deficient number, since it is larger than the sum of its proper divisors (2135311).

315252569 is a wasteful number, since it uses less digits than its factorization.

315252569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its digits is 81000, while the sum is 38.

The square root of 315252569 is about 17755.3532490908. The cubic root of 315252569 is about 680.5910151555.

The spelling of 315252569 in words is "three hundred fifteen million, two hundred fifty-two thousand, five hundred sixty-nine".