55168397 has 2 divisors, whose sum is σ = 55168398. Its totient is φ = 55168396.

The previous prime is 55168367. The next prime is 55168429. The reversal of 55168397 is 79386155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33396841 + 21771556 = 5779^2 + 4666^2 .

It is a cyclic number.

It is not a de Polignac number, because 55168397 - 2¹⁰ = 55167373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55168327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27584198 + 27584199.

It is an arithmetic number, because the mean of its divisors is an integer number (27584199).

Almost surely, 2^55168397 is an apocalyptic number.

It is an amenable number.

55168397 is a deficient number, since it is larger than the sum of its proper divisors (1).

55168397 is an equidigital number, since it uses as much as digits as its factorization.

55168397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 55168397 is about 7427.5431334998. The cubic root of 55168397 is about 380.6829753517.

The spelling of 55168397 in words is "fifty-five million, one hundred sixty-eight thousand, three hundred ninety-seven".