55085249 has 2 divisors, whose sum is σ = 55085250. Its totient is φ = 55085248.

The previous prime is 55085231. The next prime is 55085309. The reversal of 55085249 is 94258055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44890000 + 10195249 = 6700^2 + 3193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55085249 is a prime.

It is not a weakly prime, because it can be changed into another prime (55082249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27542624 + 27542625.

It is an arithmetic number, because the mean of its divisors is an integer number (27542625).

Almost surely, 2^55085249 is an apocalyptic number.

It is an amenable number.

55085249 is a deficient number, since it is larger than the sum of its proper divisors (1).

55085249 is an equidigital number, since it uses as much as digits as its factorization.

55085249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 55085249 is about 7421.9437481026. The cubic root of 55085249 is about 380.4916282205.

The spelling of 55085249 in words is "fifty-five million, eighty-five thousand, two hundred forty-nine".