1545130523 has 4 divisors (see below), whose sum is σ = 1551005808. Its totient is φ = 1539255240.

The previous prime is 1545130511. The next prime is 1545130537. The reversal of 1545130523 is 3250315451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3250315451 = 9719 ⋅334429.

It is a cyclic number.

It is not a de Polignac number, because 1545130523 - 2⁴ = 1545130507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1545130553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2937248 + ... + 2937773.

It is an arithmetic number, because the mean of its divisors is an integer number (387751452).

Almost surely, 2^1545130523 is an apocalyptic number.

1545130523 is a deficient number, since it is larger than the sum of its proper divisors (5875285).

1545130523 is an equidigital number, since it uses as much as digits as its factorization.

1545130523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5875284.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1545130523 is about 39308.1483028646. The cubic root of 1545130523 is about 1156.0813378411.

Adding to 1545130523 its reverse (3250315451), we get a palindrome (4795445974).

The spelling of 1545130523 in words is "one billion, five hundred forty-five million, one hundred thirty thousand, five hundred twenty-three".