53221415881 has 2 divisors, whose sum is σ = 53221415882. Its totient is φ = 53221415880.

The previous prime is 53221415879. The next prime is 53221415887. The reversal of 53221415881 is 18851412235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52356761856 + 864654025 = 228816^2 + 29405^2 .

It is a cyclic number.

It is not a de Polignac number, because 53221415881 - 2¹ = 53221415879 is a prime.

It is a super-2 number, since 2×53221415881² (a number of 22 digits) contains 22 as substring.

Together with 53221415879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53221415887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26610707940 + 26610707941.

It is an arithmetic number, because the mean of its divisors is an integer number (26610707941).

Almost surely, 2^53221415881 is an apocalyptic number.

It is an amenable number.

53221415881 is a deficient number, since it is larger than the sum of its proper divisors (1).

53221415881 is an equidigital number, since it uses as much as digits as its factorization.

53221415881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76800, while the sum is 40.

The spelling of 53221415881 in words is "fifty-three billion, two hundred twenty-one million, four hundred fifteen thousand, eight hundred eighty-one".