55237778 has 8 divisors (see below), whose sum is σ = 82918272. Its totient is φ = 27598356.

The previous prime is 55237759. The next prime is 55237799. The reversal of 55237778 is 87773255.

55237778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6650 + ... + 12437.

It is an arithmetic number, because the mean of its divisors is an integer number (10364784).

Almost surely, 2^55237778 is an apocalyptic number.

55237778 is a deficient number, since it is larger than the sum of its proper divisors (27680494).

55237778 is a wasteful number, since it uses less digits than its factorization.

55237778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20536.

The product of its digits is 411600, while the sum is 44.

The square root of 55237778 is about 7432.2121874984. The cubic root of 55237778 is about 380.8424936176.

The spelling of 55237778 in words is "fifty-five million, two hundred thirty-seven thousand, seven hundred seventy-eight".