55021948 has 12 divisors (see below), whose sum is σ = 101356360. Its totient is φ = 26062992.

The previous prime is 55021937. The next prime is 55021949. The reversal of 55021948 is 84912055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55021949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361911 + ... + 362062.

Almost surely, 2^55021948 is an apocalyptic number.

It is an amenable number.

55021948 is a deficient number, since it is larger than the sum of its proper divisors (46334412).

55021948 is a wasteful number, since it uses less digits than its factorization.

55021948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723996 (or 723994 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 55021948 is about 7417.6780733596. The cubic root of 55021948 is about 380.3458255309.

The spelling of 55021948 in words is "fifty-five million, twenty-one thousand, nine hundred forty-eight".