55350042197 has 2 divisors, whose sum is σ = 55350042198. Its totient is φ = 55350042196.

The previous prime is 55350042173. The next prime is 55350042233. The reversal of 55350042197 is 79124005355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38696397796 + 16653644401 = 196714^2 + 129049^2 .

It is a cyclic number.

It is not a de Polignac number, because 55350042197 - 2¹⁴ = 55350025813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55350042497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27675021098 + 27675021099.

It is an arithmetic number, because the mean of its divisors is an integer number (27675021099).

Almost surely, 2^55350042197 is an apocalyptic number.

It is an amenable number.

55350042197 is a deficient number, since it is larger than the sum of its proper divisors (1).

55350042197 is an equidigital number, since it uses as much as digits as its factorization.

55350042197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 55350042197 in words is "fifty-five billion, three hundred fifty million, forty-two thousand, one hundred ninety-seven".