55175231 has 4 divisors (see below), whose sum is σ = 55206072. Its totient is φ = 55144392.

The previous prime is 55175213. The next prime is 55175233. The reversal of 55175231 is 13257155.

It is a happy number.

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 55175231 - 2⁶ = 55175167 is a prime.

It is a super-2 number, since 2×55175231² = 6088612231806722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55175194 and 55175203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55175233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12560 + ... + 16373.

It is an arithmetic number, because the mean of its divisors is an integer number (13801518).

Almost surely, 2^55175231 is an apocalyptic number.

55175231 is a deficient number, since it is larger than the sum of its proper divisors (30841).

55175231 is a wasteful number, since it uses less digits than its factorization.

55175231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30840.

The product of its digits is 5250, while the sum is 29.

The square root of 55175231 is about 7428.0031637042. The cubic root of 55175231 is about 380.6986937713.

The spelling of 55175231 in words is "fifty-five million, one hundred seventy-five thousand, two hundred thirty-one".