5165221045 has 4 divisors (see below), whose sum is σ = 6198265260. Its totient is φ = 4132176832.

The previous prime is 5165220971. The next prime is 5165221049. The reversal of 5165221045 is 5401225615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5401225615 = 5 ⋅1080245123.

It can be written as a sum of positive squares in 2 ways, for example, as 3848837521 + 1316383524 = 62039^2 + 36282^2 .

It is a cyclic number.

It is not a de Polignac number, because 5165221045 - 2¹³ = 5165212853 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5165220998 and 5165221016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165221049) 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, 516522100 + ... + 516522109.

It is an arithmetic number, because the mean of its divisors is an integer number (1549566315).

Almost surely, 2^5165221045 is an apocalyptic number.

It is an amenable number.

5165221045 is a deficient number, since it is larger than the sum of its proper divisors (1033044215).

5165221045 is a wasteful number, since it uses less digits than its factorization.

5165221045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033044214.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 5165221045 is about 71869.4722743948. The cubic root of 5165221045 is about 1728.6071456757.

The spelling of 5165221045 in words is "five billion, one hundred sixty-five million, two hundred twenty-one thousand, forty-five".