5110055581 has 2 divisors, whose sum is σ = 5110055582. Its totient is φ = 5110055580.

The previous prime is 5110055563. The next prime is 5110055597. The reversal of 5110055581 is 1855500115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5013348025 + 96707556 = 70805^2 + 9834^2 .

It is a cyclic number.

It is not a de Polignac number, because 5110055581 - 2¹³ = 5110047389 is a prime.

It is a super-2 number, since 2×5110055581² = 52225336081818495122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5110053581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555027790 + 2555027791.

It is an arithmetic number, because the mean of its divisors is an integer number (2555027791).

Almost surely, 2^5110055581 is an apocalyptic number.

It is an amenable number.

5110055581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5110055581 is an equidigital number, since it uses as much as digits as its factorization.

5110055581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5000, while the sum is 31.

The square root of 5110055581 is about 71484.6527654713. The cubic root of 5110055581 is about 1722.4311641591.

Adding to 5110055581 its reverse (1855500115), we get a palindrome (6965555696).

The spelling of 5110055581 in words is "five billion, one hundred ten million, fifty-five thousand, five hundred eighty-one".