55398248 has 24 divisors (see below), whose sum is σ = 105659190. Its totient is φ = 27230400.

The previous prime is 55398229. The next prime is 55398263. The reversal of 55398248 is 84289355.

It is a Cunningham number, because it is equal to 7443²-1.

It can be written as a sum of positive squares in 3 ways, for example, as 2137444 + 53260804 = 1462^2 + 7298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55398199 and 55398208.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28838 + ... + 30698.

Almost surely, 2^55398248 is an apocalyptic number.

It is an amenable number.

55398248 is a deficient number, since it is larger than the sum of its proper divisors (50260942).

55398248 is a wasteful number, since it uses less digits than its factorization.

55398248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989 (or 1924 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 55398248 is about 7442.9999328228. Note that the first 4 decimals coincide. The cubic root of 55398248 is about 381.2109293295.

The spelling of 55398248 in words is "fifty-five million, three hundred ninety-eight thousand, two hundred forty-eight".