61055 has 4 divisors (see below), whose sum is σ = 73272. Its totient is φ = 48840.

The previous prime is 61051. The next prime is 61057. The reversal of 61055 is 55016.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61055 - 2² = 61051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6101 + ... + 6110.

It is an arithmetic number, because the mean of its divisors is an integer number (18318).

2⁶¹⁰⁵⁵ is an apocalyptic number.

61055 is a deficient number, since it is larger than the sum of its proper divisors (12217).

61055 is a wasteful number, since it uses less digits than its factorization.

61055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12216.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 61055 is about 247.0930998632. The cubic root of 61055 is about 39.3767992795.

The spelling of 61055 in words is "sixty-one thousand, fifty-five".