5521020065 has 24 divisors (see below), whose sum is σ = 7354454184. Its totient is φ = 3975488000.

The previous prime is 5521020061. The next prime is 5521020143. The reversal of 5521020065 is 5600201255.

It can be written as a sum of positive squares in 4 ways, for example, as 320302609 + 5200717456 = 17897^2 + 72116^2 .

It is not a de Polignac number, because 5521020065 - 2² = 5521020061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5521020061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15929 + ... + 106281.

It is an arithmetic number, because the mean of its divisors is an integer number (306435591).

Almost surely, 2^5521020065 is an apocalyptic number.

5521020065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5521020065 is a deficient number, since it is larger than the sum of its proper divisors (1833434119).

5521020065 is a wasteful number, since it uses less digits than its factorization.

5521020065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90481 (or 90470 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 5521020065 is about 74303.5669735982. The cubic root of 5521020065 is about 1767.4200408362.

The spelling of 5521020065 in words is "five billion, five hundred twenty-one million, twenty thousand, sixty-five".