5555621017 has 4 divisors (see below), whose sum is σ = 5556732516. Its totient is φ = 5554509520.

The previous prime is 5555621009. The next prime is 5555621021. The reversal of 5555621017 is 7101265555.

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 3520167561 + 2035453456 = 59331^2 + 45116^2 .

It is a cyclic number.

It is not a de Polignac number, because 5555621017 - 2³ = 5555621009 is a prime.

It is a super-2 number, since 2×5555621017² = 61729849769064228578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5555621047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548218 + ... + 558259.

It is an arithmetic number, because the mean of its divisors is an integer number (1389183129).

Almost surely, 2^5555621017 is an apocalyptic number.

It is an amenable number.

5555621017 is a deficient number, since it is larger than the sum of its proper divisors (1111499).

5555621017 is a wasteful number, since it uses less digits than its factorization.

5555621017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111498.

The product of its (nonzero) digits is 52500, while the sum is 37.

The square root of 5555621017 is about 74536.0383774185. The cubic root of 5555621017 is about 1771.1045715935.

The spelling of 5555621017 in words is "five billion, five hundred fifty-five million, six hundred twenty-one thousand, seventeen".