55975289 has 2 divisors, whose sum is σ = 55975290. Its totient is φ = 55975288.

The previous prime is 55975267. The next prime is 55975301. The reversal of 55975289 is 98257955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51955264 + 4020025 = 7208^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 55975289 - 2¹² = 55971193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55975219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27987644 + 27987645.

It is an arithmetic number, because the mean of its divisors is an integer number (27987645).

Almost surely, 2^55975289 is an apocalyptic number.

It is an amenable number.

55975289 is a deficient number, since it is larger than the sum of its proper divisors (1).

55975289 is an equidigital number, since it uses as much as digits as its factorization.

55975289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 50.

The square root of 55975289 is about 7481.6635182291. The cubic root of 55975289 is about 382.5299539388.

The spelling of 55975289 in words is "fifty-five million, nine hundred seventy-five thousand, two hundred eighty-nine".