55447130 has 48 divisors (see below), whose sum is σ = 109118880. Its totient is φ = 20228544.

The previous prime is 55447121. The next prime is 55447153. The reversal of 55447130 is 3174455.

55447130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×55447130⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 55447093 and 55447102.

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 23 ways as a sum of consecutive naturals, for example, 159617 + ... + 159963.

It is an arithmetic number, because the mean of its divisors is an integer number (2273310).

Almost surely, 2^55447130 is an apocalyptic number.

55447130 is a deficient number, since it is larger than the sum of its proper divisors (53671750).

55447130 is a wasteful number, since it uses less digits than its factorization.

55447130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 55447130 is about 7446.2829653459. The cubic root of 55447130 is about 381.3230199652.

The spelling of 55447130 in words is "fifty-five million, four hundred forty-seven thousand, one hundred thirty".