5165422521 has 16 divisors (see below), whose sum is σ = 7873367424. Its totient is φ = 2950827264.

The previous prime is 5165422421. The next prime is 5165422531. The reversal of 5165422521 is 1252245615.

It is not a de Polignac number, because 5165422521 - 2¹⁰ = 5165421497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5165422531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44371 + ... + 110903.

It is an arithmetic number, because the mean of its divisors is an integer number (492085464).

Almost surely, 2^5165422521 is an apocalyptic number.

It is an amenable number.

5165422521 is a deficient number, since it is larger than the sum of its proper divisors (2707944903).

5165422521 is a wasteful number, since it uses less digits than its factorization.

5165422521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70240.

The product of its digits is 24000, while the sum is 33.

The square root of 5165422521 is about 71870.8739407001. The cubic root of 5165422521 is about 1728.6296208884.

The spelling of 5165422521 in words is "five billion, one hundred sixty-five million, four hundred twenty-two thousand, five hundred twenty-one".