5145135481 has 4 divisors (see below), whose sum is σ = 5155614864. Its totient is φ = 5134656100.

The previous prime is 5145135473. The next prime is 5145135497. The reversal of 5145135481 is 1845315415.

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.

It is a cyclic number.

It is not a de Polignac number, because 5145135481 - 2³ = 5145135473 is a prime.

It is a super-2 number, since 2×5145135481² = 52944838235690202722, 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 5145135481.

It is not an unprimeable number, because it can be changed into a prime (5145135181) 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, 5238955 + ... + 5239936.

It is an arithmetic number, because the mean of its divisors is an integer number (1288903716).

Almost surely, 2^5145135481 is an apocalyptic number.

It is an amenable number.

5145135481 is a deficient number, since it is larger than the sum of its proper divisors (10479383).

5145135481 is a wasteful number, since it uses less digits than its factorization.

5145135481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10479382.

The product of its digits is 48000, while the sum is 37.

The square root of 5145135481 is about 71729.5997549129. The cubic root of 5145135481 is about 1726.3636049540.

The spelling of 5145135481 in words is "five billion, one hundred forty-five million, one hundred thirty-five thousand, four hundred eighty-one".