55146471 has 4 divisors (see below), whose sum is σ = 73528632. Its totient is φ = 36764312.

The previous prime is 55146467. The next prime is 55146491. The reversal of 55146471 is 17464155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55146471 - 2² = 55146467 is a prime.

It is a super-3 number, since 3×55146471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55146401) 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 3 ways as a sum of consecutive naturals, for example, 9191076 + ... + 9191081.

It is an arithmetic number, because the mean of its divisors is an integer number (18382158).

Almost surely, 2^55146471 is an apocalyptic number.

55146471 is a deficient number, since it is larger than the sum of its proper divisors (18382161).

55146471 is a wasteful number, since it uses less digits than its factorization.

55146471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18382160.

The product of its digits is 16800, while the sum is 33.

The square root of 55146471 is about 7426.0669940420. The cubic root of 55146471 is about 380.6325360821.

The spelling of 55146471 in words is "fifty-five million, one hundred forty-six thousand, four hundred seventy-one".