5221565401 has 4 divisors (see below), whose sum is σ = 5623224292. Its totient is φ = 4819906512.

The previous prime is 5221565381. The next prime is 5221565411. The reversal of 5221565401 is 1045651225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2629228176 + 2592337225 = 51276^2 + 50915^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221565401 - 2⁷ = 5221565273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5221565411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200829426 + ... + 200829451.

It is an arithmetic number, because the mean of its divisors is an integer number (1405806073).

Almost surely, 2^5221565401 is an apocalyptic number.

It is an amenable number.

5221565401 is a deficient number, since it is larger than the sum of its proper divisors (401658891).

5221565401 is a wasteful number, since it uses less digits than its factorization.

5221565401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401658890.

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

The square root of 5221565401 is about 72260.3999504570. The cubic root of 5221565401 is about 1734.8698810307.

The spelling of 5221565401 in words is "five billion, two hundred twenty-one million, five hundred sixty-five thousand, four hundred one".