1315020551 has 8 divisors (see below), whose sum is σ = 1416992640. Its totient is φ = 1213165152.

The previous prime is 1315020541. The next prime is 1315020557. The reversal of 1315020551 is 1550205131.

It is a happy number.

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 1315020551 - 2²² = 1310826247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315020557) 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, 5015 + ... + 51528.

It is an arithmetic number, because the mean of its divisors is an integer number (177124080).

Almost surely, 2^1315020551 is an apocalyptic number.

1315020551 is a deficient number, since it is larger than the sum of its proper divisors (101972089).

1315020551 is a wasteful number, since it uses less digits than its factorization.

1315020551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58345.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1315020551 is about 36263.2120888374. The cubic root of 1315020551 is about 1095.5802130672.

Adding to 1315020551 its reverse (1550205131), we get a palindrome (2865225682).

The spelling of 1315020551 in words is "one billion, three hundred fifteen million, twenty thousand, five hundred fifty-one".