19550249 has 2 divisors, whose sum is σ = 19550250. Its totient is φ = 19550248.

The previous prime is 19550239. The next prime is 19550257. The reversal of 19550249 is 94205591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18550249 + 1000000 = 4307^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 19550249 - 2⁴ = 19550233 is a prime.

It is not a weakly prime, because it can be changed into another prime (19550239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9775124 + 9775125.

It is an arithmetic number, because the mean of its divisors is an integer number (9775125).

Almost surely, 2^19550249 is an apocalyptic number.

It is an amenable number.

19550249 is a deficient number, since it is larger than the sum of its proper divisors (1).

19550249 is an equidigital number, since it uses as much as digits as its factorization.

19550249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 19550249 is about 4421.5663514189. The cubic root of 19550249 is about 269.3916297785.

The spelling of 19550249 in words is "nineteen million, five hundred fifty thousand, two hundred forty-nine".