55438001197 has 2 divisors, whose sum is σ = 55438001198. Its totient is φ = 55438001196.

The previous prime is 55438001167. The next prime is 55438001233. The reversal of 55438001197 is 79110083455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37618154116 + 17819847081 = 193954^2 + 133491^2 .

It is a cyclic number.

It is not a de Polignac number, because 55438001197 - 2¹⁵ = 55437968429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55438001167) 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, 27719000598 + 27719000599.

It is an arithmetic number, because the mean of its divisors is an integer number (27719000599).

Almost surely, 2^55438001197 is an apocalyptic number.

It is an amenable number.

55438001197 is a deficient number, since it is larger than the sum of its proper divisors (1).

55438001197 is an equidigital number, since it uses as much as digits as its factorization.

55438001197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 55438001197 in words is "fifty-five billion, four hundred thirty-eight million, one thousand, one hundred ninety-seven".