55773648 has 60 divisors (see below), whose sum is σ = 178390368. Its totient is φ = 15935040.

The previous prime is 55773589. The next prime is 55773661. The reversal of 55773648 is 84637755.

55773648 is a `hidden beast` number, since 5 + 577 + 36 + 48 = 666.

It is a super-2 number, since 2×55773648² = 6221399622455808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26658 + ... + 28673.

Almost surely, 2^55773648 is an apocalyptic number.

It is an amenable number.

55773648 is an abundant number, since it is smaller than the sum of its proper divisors (122616720).

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

55773648 is a wasteful number, since it uses less digits than its factorization.

55773648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55352 (or 55343 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 55773648 is about 7468.1756808474. The cubic root of 55773648 is about 382.0700692898.

The spelling of 55773648 in words is "fifty-five million, seven hundred seventy-three thousand, six hundred forty-eight".