5165220561 has 8 divisors (see below), whose sum is σ = 7186393920. Its totient is φ = 3293763792.

The previous prime is 5165220521. The next prime is 5165220583. The reversal of 5165220561 is 1650225615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5165220561 - 2¹⁸ = 5164958417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5165220521) 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 7 ways as a sum of consecutive naturals, for example, 37429066 + ... + 37429203.

It is an arithmetic number, because the mean of its divisors is an integer number (898299240).

Almost surely, 2^5165220561 is an apocalyptic number.

It is an amenable number.

5165220561 is a deficient number, since it is larger than the sum of its proper divisors (2021173359).

5165220561 is a wasteful number, since it uses less digits than its factorization.

5165220561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74858295.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 5165220561 is about 71869.4689071792. The cubic root of 5165220561 is about 1728.6070916834.

The spelling of 5165220561 in words is "five billion, one hundred sixty-five million, two hundred twenty thousand, five hundred sixty-one".