5515522921 has 2 divisors, whose sum is σ = 5515522922. Its totient is φ = 5515522920.

The previous prime is 5515522913. The next prime is 5515522933. The reversal of 5515522921 is 1292255155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5106674521 + 408848400 = 71461^2 + 20220^2 .

It is a cyclic number.

It is not a de Polignac number, because 5515522921 - 2³ = 5515522913 is a prime.

It is not a weakly prime, because it can be changed into another prime (5515523921) 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 as a sum of consecutive naturals, namely, 2757761460 + 2757761461.

It is an arithmetic number, because the mean of its divisors is an integer number (2757761461).

Almost surely, 2^5515522921 is an apocalyptic number.

It is an amenable number.

5515522921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5515522921 is an equidigital number, since it uses as much as digits as its factorization.

5515522921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45000, while the sum is 37.

The square root of 5515522921 is about 74266.5666434096. The cubic root of 5515522921 is about 1766.8332538098.

The spelling of 5515522921 in words is "five billion, five hundred fifteen million, five hundred twenty-two thousand, nine hundred twenty-one".