55242648 has 96 divisors (see below), whose sum is σ = 157007760. Its totient is φ = 18195840.

The previous prime is 55242643. The next prime is 55242667. The reversal of 55242648 is 84624255.

It is a happy number.

55242648 is a `hidden beast` number, since 5 + 5 + 2 + 4 + 2 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55242641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305118 + ... + 305298.

Almost surely, 2^55242648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55242648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78503880).

55242648 is an abundant number, since it is smaller than the sum of its proper divisors (101765112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55242648 is a wasteful number, since it uses less digits than its factorization.

55242648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 343 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 55242648 is about 7432.5398081679. The cubic root of 55242648 is about 380.8536855259.

The spelling of 55242648 in words is "fifty-five million, two hundred forty-two thousand, six hundred forty-eight".