55914433381 has 2 divisors, whose sum is σ = 55914433382. Its totient is φ = 55914433380.

The previous prime is 55914433273. The next prime is 55914433387. The reversal of 55914433381 is 18333441955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55032937281 + 881496100 = 234591^2 + 29690^2 .

It is a cyclic number.

It is not a de Polignac number, because 55914433381 - 2²¹ = 55912336229 is a prime.

It is a super-2 number, since 2×55914433381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55914433387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27957216690 + 27957216691.

It is an arithmetic number, because the mean of its divisors is an integer number (27957216691).

Almost surely, 2^55914433381 is an apocalyptic number.

It is an amenable number.

55914433381 is a deficient number, since it is larger than the sum of its proper divisors (1).

55914433381 is an equidigital number, since it uses as much as digits as its factorization.

55914433381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 46.

The spelling of 55914433381 in words is "fifty-five billion, nine hundred fourteen million, four hundred thirty-three thousand, three hundred eighty-one".