1554545313 has 18 divisors (see below), whose sum is σ = 2320237842. Its totient is φ = 1002926880.

The previous prime is 1554545309. The next prime is 1554545339. The reversal of 1554545313 is 3135454551.

1554545313 is a `hidden beast` number, since 1 + 554 + 54 + 53 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1460997729 + 93547584 = 38223^2 + 9672^2 .

It is not a de Polignac number, because 1554545313 - 2² = 1554545309 is a prime.

It is a super-2 number, since 2×1554545313² = 4833222260340535938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1554545353) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 81220 + ... + 98517.

Almost surely, 2^1554545313 is an apocalyptic number.

It is an amenable number.

1554545313 is a deficient number, since it is larger than the sum of its proper divisors (765692529).

1554545313 is a wasteful number, since it uses less digits than its factorization.

1554545313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179805 (or 179771 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 1554545313 is about 39427.7226453672. The cubic root of 1554545313 is about 1158.4246632587.

Adding to 1554545313 its reverse (3135454551), we get a palindrome (4689999864).

The spelling of 1554545313 in words is "one billion, five hundred fifty-four million, five hundred forty-five thousand, three hundred thirteen".