55011851 has 4 divisors (see below), whose sum is σ = 55765512. Its totient is φ = 54258192.

The previous prime is 55011841. The next prime is 55011871. The reversal of 55011851 is 15811055.

55011851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55011851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55011851.

It is not an unprimeable number, because it can be changed into a prime (55011841) by changing a digit.

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, 376721 + ... + 376866.

It is an arithmetic number, because the mean of its divisors is an integer number (13941378).

Almost surely, 2^55011851 is an apocalyptic number.

55011851 is a deficient number, since it is larger than the sum of its proper divisors (753661).

55011851 is an equidigital number, since it uses as much as digits as its factorization.

55011851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753660.

The product of its (nonzero) digits is 1000, while the sum is 26.

The square root of 55011851 is about 7416.9974383169. The cubic root of 55011851 is about 380.3225585325.

The spelling of 55011851 in words is "fifty-five million, eleven thousand, eight hundred fifty-one".