55066357 has 2 divisors, whose sum is σ = 55066358. Its totient is φ = 55066356.

The previous prime is 55066343. The next prime is 55066367. The reversal of 55066357 is 75366055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34644996 + 20421361 = 5886^2 + 4519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55066357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55066367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27533178 + 27533179.

It is an arithmetic number, because the mean of its divisors is an integer number (27533179).

Almost surely, 2^55066357 is an apocalyptic number.

It is an amenable number.

55066357 is a deficient number, since it is larger than the sum of its proper divisors (1).

55066357 is an equidigital number, since it uses as much as digits as its factorization.

55066357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 37.

The square root of 55066357 is about 7420.6709265403. The cubic root of 55066357 is about 380.4481255291.

The spelling of 55066357 in words is "fifty-five million, sixty-six thousand, three hundred fifty-seven".