55442648 has 16 divisors (see below), whose sum is σ = 104058000. Its totient is φ = 27693856.

The previous prime is 55442641. The next prime is 55442669. The reversal of 55442648 is 84624455.

It is a super-3 number, since 3×55442648³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55442641) 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, 7013 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (6503625).

Almost surely, 2^55442648 is an apocalyptic number.

It is an amenable number.

55442648 is a deficient number, since it is larger than the sum of its proper divisors (48615352).

55442648 is a wasteful number, since it uses less digits than its factorization.

55442648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874 (or 6870 counting only the distinct ones).

The product of its digits is 153600, while the sum is 38.

The square root of 55442648 is about 7445.9820037387. The cubic root of 55442648 is about 381.3127450972.

It can be divided in two parts, 5544 and 2648, that added together give a 13-th power (8192 = 2¹³).

The spelling of 55442648 in words is "fifty-five million, four hundred forty-two thousand, six hundred forty-eight".