55642193 has 2 divisors, whose sum is σ = 55642194. Its totient is φ = 55642192.

The previous prime is 55642189. The next prime is 55642231. The reversal of 55642193 is 39124655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55606849 + 35344 = 7457^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 55642193 - 2² = 55642189 is a prime.

It is not a weakly prime, because it can be changed into another prime (55642183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27821096 + 27821097.

It is an arithmetic number, because the mean of its divisors is an integer number (27821097).

Almost surely, 2^55642193 is an apocalyptic number.

It is an amenable number.

55642193 is a deficient number, since it is larger than the sum of its proper divisors (1).

55642193 is an equidigital number, since it uses as much as digits as its factorization.

55642193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 55642193 is about 7459.3694773754. The cubic root of 55642193 is about 381.7696613995.

The spelling of 55642193 in words is "fifty-five million, six hundred forty-two thousand, one hundred ninety-three".