61061 has 16 divisors (see below), whose sum is σ = 83328. Its totient is φ = 43200.

The previous prime is 61057. The next prime is 61091. The reversal of 61061 is 16016.

It is a cyclic number.

It is not a de Polignac number, because 61061 - 2² = 61057 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971 + ... + 1031.

It is an arithmetic number, because the mean of its divisors is an integer number (5208).

2⁶¹⁰⁶¹ is an apocalyptic number.

61061 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

61061 is the 143-rd octagonal number.

It is an amenable number.

61061 is a deficient number, since it is larger than the sum of its proper divisors (22267).

61061 is a wasteful number, since it uses less digits than its factorization.

61061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 61061 is about 247.1052407376. The cubic root of 61061 is about 39.3780891168.

Adding to 61061 its sum of digits (14), we get a triangular number (61075 = T₃₄₉).

Adding to 61061 its reverse (16016), we get a palindrome (77077).

The spelling of 61061 in words is "sixty-one thousand, sixty-one".