55478051 has 8 divisors (see below), whose sum is σ = 56567808. Its totient is φ = 54397000.

The previous prime is 55478023. The next prime is 55478053. The reversal of 55478051 is 15087455.

55478051 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55478051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55478053) 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 7 ways as a sum of consecutive naturals, for example, 11516 + ... + 15606.

It is an arithmetic number, because the mean of its divisors is an integer number (7070976).

Almost surely, 2^55478051 is an apocalyptic number.

55478051 is a deficient number, since it is larger than the sum of its proper divisors (1089757).

55478051 is a wasteful number, since it uses less digits than its factorization.

55478051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 55478051 is about 7448.3589467748. The cubic root of 55478051 is about 381.3938904682.

The spelling of 55478051 in words is "fifty-five million, four hundred seventy-eight thousand, fifty-one".