5510065621 has 2 divisors, whose sum is σ = 5510065622. Its totient is φ = 5510065620.

The previous prime is 5510065597. The next prime is 5510065657. The reversal of 5510065621 is 1265600155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3313268721 + 2196796900 = 57561^2 + 46870^2 .

It is a cyclic number.

It is not a de Polignac number, because 5510065621 - 2¹³ = 5510057429 is a prime.

It is a super-2 number, since 2×5510065621² = 60721646295452231282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5510065661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755032810 + 2755032811.

It is an arithmetic number, because the mean of its divisors is an integer number (2755032811).

Almost surely, 2^5510065621 is an apocalyptic number.

It is an amenable number.

5510065621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5510065621 is an equidigital number, since it uses as much as digits as its factorization.

5510065621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 5510065621 is about 74229.8162533089. The cubic root of 5510065621 is about 1766.2503341048.

Adding to 5510065621 its reverse (1265600155), we get a palindrome (6775665776).

The spelling of 5510065621 in words is "five billion, five hundred ten million, sixty-five thousand, six hundred twenty-one".