55775424 has 28 divisors (see below), whose sum is σ = 147572984. Its totient is φ = 18591744.

The previous prime is 55775413. The next prime is 55775509. The reversal of 55775424 is 42457755.

It is a super-2 number, since 2×55775424² = 6221795844759552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145057 + ... + 145440.

Almost surely, 2^55775424 is an apocalyptic number.

It is an amenable number.

55775424 is an abundant number, since it is smaller than the sum of its proper divisors (91797560).

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

55775424 is a wasteful number, since it uses less digits than its factorization.

55775424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290512 (or 290502 counting only the distinct ones).

The product of its digits is 196000, while the sum is 39.

The square root of 55775424 is about 7468.2945844416. The cubic root of 55775424 is about 382.0741246652.

The spelling of 55775424 in words is "fifty-five million, seven hundred seventy-five thousand, four hundred twenty-four".