1315555553 has 8 divisors (see below), whose sum is σ = 1429751400. Its totient is φ = 1203216768.

The previous prime is 1315555543. The next prime is 1315555583. The reversal of 1315555553 is 3555555131.

It can be written as a sum of positive squares in 4 ways, for example, as 368947264 + 946608289 = 19208^2 + 30767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1315555553 - 2¹⁶ = 1315490017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315555543) 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, 462788 + ... + 465621.

It is an arithmetic number, because the mean of its divisors is an integer number (178718925).

Almost surely, 2^1315555553 is an apocalyptic number.

1315555553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1315555553 is a deficient number, since it is larger than the sum of its proper divisors (114195847).

1315555553 is a wasteful number, since it uses less digits than its factorization.

1315555553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928531.

The product of its digits is 140625, while the sum is 38.

The square root of 1315555553 is about 36270.5879880655. The cubic root of 1315555553 is about 1095.7287679408.

The spelling of 1315555553 in words is "one billion, three hundred fifteen million, five hundred fifty-five thousand, five hundred fifty-three".