55645748 has 12 divisors (see below), whose sum is σ = 98344932. Its totient is φ = 27547200.

The previous prime is 55645747. The next prime is 55645757. The reversal of 55645748 is 84754655.

It can be written as a sum of positive squares in 2 ways, for example, as 37429924 + 18215824 = 6118^2 + 4268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55645699 and 55645708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55645747) 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 3 ways as a sum of consecutive naturals, for example, 68465 + ... + 69272.

It is an arithmetic number, because the mean of its divisors is an integer number (8195411).

Almost surely, 2^55645748 is an apocalyptic number.

It is an amenable number.

55645748 is a deficient number, since it is larger than the sum of its proper divisors (42699184).

55645748 is a wasteful number, since it uses less digits than its factorization.

55645748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137842 (or 137840 counting only the distinct ones).

The product of its digits is 672000, while the sum is 44.

The square root of 55645748 is about 7459.6077644874. The cubic root of 55645748 is about 381.7777916940. Note that the first 4 decimals are identical.

The spelling of 55645748 in words is "fifty-five million, six hundred forty-five thousand, seven hundred forty-eight".