55198213250 has 16 divisors (see below), whose sum is σ = 103331055672. Its totient is φ = 22079285200.

The previous prime is 55198213181. The next prime is 55198213253. The reversal of 55198213250 is 5231289155.

It is a happy number.

It is a Cunningham number, because it is equal to 234943²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 6839124601 + 48359088649 = 82699^2 + 219907^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55198213198 and 55198213207.

It is not an unprimeable number, because it can be changed into a prime (55198213253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110396177 + ... + 110396676.

Almost surely, 2^55198213250 is an apocalyptic number.

55198213250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55198213250 is a deficient number, since it is larger than the sum of its proper divisors (48132842422).

55198213250 is a wasteful number, since it uses less digits than its factorization.

55198213250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220792870 (or 220792860 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 55198213250 in words is "fifty-five billion, one hundred ninety-eight million, two hundred thirteen thousand, two hundred fifty".