61173 has 12 divisors (see below), whose sum is σ = 101088. Its totient is φ = 34920.

The previous prime is 61169. The next prime is 61211. The reversal of 61173 is 37116.

It is not a de Polignac number, because 61173 - 2² = 61169 is a prime.

It is a Curzon number.

61173 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423 + ... + 548.

It is an arithmetic number, because the mean of its divisors is an integer number (8424).

2⁶¹¹⁷³ is an apocalyptic number.

61173 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61173 is a deficient number, since it is larger than the sum of its proper divisors (39915).

61173 is a wasteful number, since it uses less digits than its factorization.

61173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 981 counting only the distinct ones).

The product of its digits is 126, while the sum is 18.

The square root of 61173 is about 247.3317610013. The cubic root of 61173 is about 39.4021505865.

Adding to 61173 its reverse (37116), we get a palindrome (98289).

The spelling of 61173 in words is "sixty-one thousand, one hundred seventy-three".