55530471 has 16 divisors (see below), whose sum is σ = 75437568. Its totient is φ = 36326400.

The previous prime is 55530421. The next prime is 55530473. The reversal of 55530471 is 17403555.

It is not a de Polignac number, because 55530471 - 2¹⁵ = 55497703 is a prime.

It is a super-3 number, since 3×55530471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55530473) 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 15 ways as a sum of consecutive naturals, for example, 86311 + ... + 86951.

It is an arithmetic number, because the mean of its divisors is an integer number (4714848).

Almost surely, 2^55530471 is an apocalyptic number.

55530471 is a deficient number, since it is larger than the sum of its proper divisors (19907097).

55530471 is a wasteful number, since it uses less digits than its factorization.

55530471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55530471 is about 7451.8770118675. The cubic root of 55530471 is about 381.5139762427.

The spelling of 55530471 in words is "fifty-five million, five hundred thirty thousand, four hundred seventy-one".