55320471 has 12 divisors (see below), whose sum is σ = 80484040. Its totient is φ = 36614160.

The previous prime is 55320469. The next prime is 55320481. The reversal of 55320471 is 17402355.

It is a happy number.

It is not a de Polignac number, because 55320471 - 2¹ = 55320469 is a prime.

It is a super-3 number, since 3×55320471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55320481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20860 + ... + 23361.

Almost surely, 2^55320471 is an apocalyptic number.

55320471 is a deficient number, since it is larger than the sum of its proper divisors (25163569).

55320471 is a wasteful number, since it uses less digits than its factorization.

55320471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44366 (or 44363 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55320471 is about 7437.7732554845. The cubic root of 55320471 is about 381.0324439687.

The spelling of 55320471 in words is "fifty-five million, three hundred twenty thousand, four hundred seventy-one".