5023145521 has 4 divisors (see below), whose sum is σ = 5024329200. Its totient is φ = 5021961844.

The previous prime is 5023145503. The next prime is 5023145527. The reversal of 5023145521 is 1255413205.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1255413205 = 5 ⋅251082641.

It is a cyclic number.

It is not a de Polignac number, because 5023145521 - 2²⁹ = 4486274609 is a prime.

It is a super-2 number, since 2×5023145521² = 50463981850284722882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5023145521.

It is not an unprimeable number, because it can be changed into a prime (5023145527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585451 + ... + 593968.

It is an arithmetic number, because the mean of its divisors is an integer number (1256082300).

Almost surely, 2^5023145521 is an apocalyptic number.

It is an amenable number.

5023145521 is a deficient number, since it is larger than the sum of its proper divisors (1183679).

5023145521 is a wasteful number, since it uses less digits than its factorization.

5023145521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183678.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 5023145521 is about 70874.1527004027. The cubic root of 5023145521 is about 1712.6104380160.

Adding to 5023145521 its reverse (1255413205), we get a palindrome (6278558726).

It can be divided in two parts, 5023 and 145521, that added together give a square (150544 = 388²).

The spelling of 5023145521 in words is "five billion, twenty-three million, one hundred forty-five thousand, five hundred twenty-one".