54686173 has 2 divisors, whose sum is σ = 54686174. Its totient is φ = 54686172.

The previous prime is 54686143. The next prime is 54686179. The reversal of 54686173 is 37168645.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49942489 + 4743684 = 7067^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 54686173 - 2²¹ = 52589021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54686179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27343086 + 27343087.

It is an arithmetic number, because the mean of its divisors is an integer number (27343087).

Almost surely, 2^54686173 is an apocalyptic number.

It is an amenable number.

54686173 is a deficient number, since it is larger than the sum of its proper divisors (1).

54686173 is an equidigital number, since it uses as much as digits as its factorization.

54686173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 54686173 is about 7395.0100067546. The cubic root of 54686173 is about 379.5705513236.

The spelling of 54686173 in words is "fifty-four million, six hundred eighty-six thousand, one hundred seventy-three".