55421221353371 has 2 divisors, whose sum is σ = 55421221353372. Its totient is φ = 55421221353370.

The previous prime is 55421221353359. The next prime is 55421221353479. The reversal of 55421221353371 is 17335312212455.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55421221353371 is a prime.

It is not a weakly prime, because it can be changed into another prime (55421221353671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27710610676685 + 27710610676686.

It is an arithmetic number, because the mean of its divisors is an integer number (27710610676686).

Almost surely, 2^{55421221353371} is an apocalyptic number.

55421221353371 is a deficient number, since it is larger than the sum of its proper divisors (1).

55421221353371 is an equidigital number, since it uses as much as digits as its factorization.

55421221353371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 44.

The spelling of 55421221353371 in words is "fifty-five trillion, four hundred twenty-one billion, two hundred twenty-one million, three hundred fifty-three thousand, three hundred seventy-one".