55254404081 has 2 divisors, whose sum is σ = 55254404082. Its totient is φ = 55254404080.

The previous prime is 55254404077. The next prime is 55254404111. The reversal of 55254404081 is 18040445255.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30039822400 + 25214581681 = 173320^2 + 158791^2 .

It is a cyclic number.

It is not a de Polignac number, because 55254404081 - 2² = 55254404077 is a prime.

It is a super-2 number, since 2×55254404081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55254403081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27627202040 + 27627202041.

It is an arithmetic number, because the mean of its divisors is an integer number (27627202041).

Almost surely, 2^55254404081 is an apocalyptic number.

It is an amenable number.

55254404081 is a deficient number, since it is larger than the sum of its proper divisors (1).

55254404081 is an equidigital number, since it uses as much as digits as its factorization.

55254404081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128000, while the sum is 38.

The spelling of 55254404081 in words is "fifty-five billion, two hundred fifty-four million, four hundred four thousand, eighty-one".