55198930 has 8 divisors (see below), whose sum is σ = 99358092. Its totient is φ = 22079568.

The previous prime is 55198921. The next prime is 55198939. The reversal of 55198930 is 3989155.

It is an interprime number because it is at equal distance from previous prime (55198921) and next prime (55198939).

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 9054081 = 6793^2 + 3009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (55198939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2759937 + ... + 2759956.

Almost surely, 2^55198930 is an apocalyptic number.

55198930 is a deficient number, since it is larger than the sum of its proper divisors (44159162).

55198930 is a wasteful number, since it uses less digits than its factorization.

55198930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519900.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 55198930 is about 7429.5982394743. The cubic root of 55198930 is about 380.7531921802.

The spelling of 55198930 in words is "fifty-five million, one hundred ninety-eight thousand, nine hundred thirty".