55448625 has 16 divisors (see below), whose sum is σ = 92267136. Its totient is φ = 29572400.

The previous prime is 55448621. The next prime is 55448639. The reversal of 55448625 is 52684455.

It is not a de Polignac number, because 55448625 - 2² = 55448621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55448621) 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 15 ways as a sum of consecutive naturals, for example, 73557 + ... + 74306.

It is an arithmetic number, because the mean of its divisors is an integer number (5766696).

Almost surely, 2^55448625 is an apocalyptic number.

It is an amenable number.

55448625 is a deficient number, since it is larger than the sum of its proper divisors (36818511).

55448625 is a wasteful number, since it uses less digits than its factorization.

55448625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147881 (or 147871 counting only the distinct ones).

The product of its digits is 192000, while the sum is 39.

The square root of 55448625 is about 7446.3833503252. The cubic root of 55448625 is about 381.3264470905.

The spelling of 55448625 in words is "fifty-five million, four hundred forty-eight thousand, six hundred twenty-five".