55551447 has 48 divisors (see below), whose sum is σ = 96672000. Its totient is φ = 31434480.

The previous prime is 55551437. The next prime is 55551449. The reversal of 55551447 is 74415555.

It is not a de Polignac number, because 55551447 - 2⁸ = 55551191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55551449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 263172 + ... + 263382.

It is an arithmetic number, because the mean of its divisors is an integer number (2014000).

Almost surely, 2^55551447 is an apocalyptic number.

55551447 is a deficient number, since it is larger than the sum of its proper divisors (41120553).

55551447 is a wasteful number, since it uses less digits than its factorization.

55551447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 420 counting only the distinct ones).

The product of its digits is 70000, while the sum is 36.

The square root of 55551447 is about 7453.2843096181. The cubic root of 55551447 is about 381.5620077084.

The spelling of 55551447 in words is "fifty-five million, five hundred fifty-one thousand, four hundred forty-seven".