55748851 has 4 divisors (see below), whose sum is σ = 55763872. Its totient is φ = 55733832.

The previous prime is 55748827. The next prime is 55748863. The reversal of 55748851 is 15884755.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 15884755 = 5 ⋅3176951.

It is a cyclic number.

It is not a de Polignac number, because 55748851 - 2⁷ = 55748723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55748798 and 55748807.

It is not an unprimeable number, because it can be changed into a prime (55748801) 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, 2545 + ... + 10861.

It is an arithmetic number, because the mean of its divisors is an integer number (13940968).

Almost surely, 2^55748851 is an apocalyptic number.

55748851 is a deficient number, since it is larger than the sum of its proper divisors (15021).

55748851 is an equidigital number, since it uses as much as digits as its factorization.

55748851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15020.

The product of its digits is 224000, while the sum is 43.

The square root of 55748851 is about 7466.5153184066. The cubic root of 55748851 is about 382.0134380295.

The spelling of 55748851 in words is "fifty-five million, seven hundred forty-eight thousand, eight hundred fifty-one".