55283287 has 2 divisors, whose sum is σ = 55283288. Its totient is φ = 55283286.

The previous prime is 55283273. The next prime is 55283317. The reversal of 55283287 is 78238255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55283287 - 2⁷ = 55283159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55283257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27641643 + 27641644.

It is an arithmetic number, because the mean of its divisors is an integer number (27641644).

Almost surely, 2^55283287 is an apocalyptic number.

55283287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55283287 is an equidigital number, since it uses as much as digits as its factorization.

55283287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The square root of 55283287 is about 7435.2731624332. The cubic root of 55283287 is about 380.9470537219.

The spelling of 55283287 in words is "fifty-five million, two hundred eighty-three thousand, two hundred eighty-seven".