55171193 has 32 divisors (see below), whose sum is σ = 74173440. Its totient is φ = 39735360.

The previous prime is 55171177. The next prime is 55171211. The reversal of 55171193 is 39117155.

It is a happy number.

It is not a de Polignac number, because 55171193 - 2⁴ = 55171177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55171163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62471 + ... + 63347.

It is an arithmetic number, because the mean of its divisors is an integer number (2317920).

Almost surely, 2^55171193 is an apocalyptic number.

It is an amenable number.

55171193 is a deficient number, since it is larger than the sum of its proper divisors (19002247).

55171193 is a wasteful number, since it uses less digits than its factorization.

55171193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957.

The product of its digits is 4725, while the sum is 32.

The square root of 55171193 is about 7427.7313494768. The cubic root of 55171193 is about 380.6894063984.

The spelling of 55171193 in words is "fifty-five million, one hundred seventy-one thousand, one hundred ninety-three".