55112081 has 2 divisors, whose sum is σ = 55112082. Its totient is φ = 55112080.

The previous prime is 55112063. The next prime is 55112119. The reversal of 55112081 is 18021155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39438400 + 15673681 = 6280^2 + 3959^2 .

It is a cyclic number.

It is not a de Polignac number, because 55112081 - 2¹⁴ = 55095697 is a prime.

It is a super-2 number, since 2×55112081² = 6074682944301122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55112051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27556040 + 27556041.

It is an arithmetic number, because the mean of its divisors is an integer number (27556041).

Almost surely, 2^55112081 is an apocalyptic number.

It is an amenable number.

55112081 is a deficient number, since it is larger than the sum of its proper divisors (1).

55112081 is an equidigital number, since it uses as much as digits as its factorization.

55112081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 55112081 is about 7423.7511407644. The cubic root of 55112081 is about 380.5533972926.

The spelling of 55112081 in words is "fifty-five million, one hundred twelve thousand, eighty-one".