55214511281 has 2 divisors, whose sum is σ = 55214511282. Its totient is φ = 55214511280.

The previous prime is 55214511269. The next prime is 55214511311. The reversal of 55214511281 is 18211541255.

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., 54775189681 + 439321600 = 234041^2 + 20960^2 .

It is a cyclic number.

It is not a de Polignac number, because 55214511281 - 2⁶ = 55214511217 is a prime.

It is a super-2 number, since 2×55214511281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55214511211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27607255640 + 27607255641.

It is an arithmetic number, because the mean of its divisors is an integer number (27607255641).

Almost surely, 2^55214511281 is an apocalyptic number.

It is an amenable number.

55214511281 is a deficient number, since it is larger than the sum of its proper divisors (1).

55214511281 is an equidigital number, since it uses as much as digits as its factorization.

55214511281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16000, while the sum is 35.

The spelling of 55214511281 in words is "fifty-five billion, two hundred fourteen million, five hundred eleven thousand, two hundred eighty-one".