5105521345 has 16 divisors (see below), whose sum is σ = 6510464208. Its totient is φ = 3830261760.

The previous prime is 5105521313. The next prime is 5105521361. The reversal of 5105521345 is 5431255015.

It can be written as a sum of positive squares in 8 ways, for example, as 345625281 + 4759896064 = 18591^2 + 68992^2 .

It is not a de Polignac number, because 5105521345 - 2⁵ = 5105521313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84876 + ... + 131965.

It is an arithmetic number, because the mean of its divisors is an integer number (406904013).

Almost surely, 2^5105521345 is an apocalyptic number.

It is an amenable number.

5105521345 is a deficient number, since it is larger than the sum of its proper divisors (1404942863).

5105521345 is a wasteful number, since it uses less digits than its factorization.

5105521345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217140.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 5105521345 is about 71452.9309755730. The cubic root of 5105521345 is about 1721.9215662783.

It can be divided in two parts, 5 and 105521345, that multiplied together give a palindrome (527606725).

The spelling of 5105521345 in words is "five billion, one hundred five million, five hundred twenty-one thousand, three hundred forty-five".