1545131553 has 12 divisors (see below), whose sum is σ = 2396530800. Its totient is φ = 882932232.

The previous prime is 1545131537. The next prime is 1545131561. The reversal of 1545131553 is 3551315451.

It is not a de Polignac number, because 1545131553 - 2⁴ = 1545131537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1545131503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5255403 + ... + 5255696.

It is an arithmetic number, because the mean of its divisors is an integer number (199710900).

Almost surely, 2^1545131553 is an apocalyptic number.

It is an amenable number.

1545131553 is a deficient number, since it is larger than the sum of its proper divisors (851399247).

1545131553 is a wasteful number, since it uses less digits than its factorization.

1545131553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511116 (or 10511109 counting only the distinct ones).

The product of its digits is 22500, while the sum is 33.

The square root of 1545131553 is about 39308.1614044717. The cubic root of 1545131553 is about 1156.0815947263.

The spelling of 1545131553 in words is "one billion, five hundred forty-five million, one hundred thirty-one thousand, five hundred fifty-three".