55193471 has 4 divisors (see below), whose sum is σ = 56098344. Its totient is φ = 54288600.

The previous prime is 55193449. The next prime is 55193513. The reversal of 55193471 is 17439155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17439155 = 5 ⋅3487831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55193471 is a prime.

It is a super-3 number, since 3×55193471³ (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 (55193771) 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, 452345 + ... + 452466.

It is an arithmetic number, because the mean of its divisors is an integer number (14024586).

Almost surely, 2^55193471 is an apocalyptic number.

55193471 is a deficient number, since it is larger than the sum of its proper divisors (904873).

55193471 is an equidigital number, since it uses as much as digits as its factorization.

55193471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904872.

The product of its digits is 18900, while the sum is 35.

The square root of 55193471 is about 7429.2308484795. The cubic root of 55193471 is about 380.7406400033.

The spelling of 55193471 in words is "fifty-five million, one hundred ninety-three thousand, four hundred seventy-one".