61045 has 8 divisors (see below), whose sum is σ = 75960. Its totient is φ = 47040.

The previous prime is 61043. The next prime is 61051. The reversal of 61045 is 54016.

It can be written as a sum of positive squares in 4 ways, for example, as 36 + 61009 = 6^2 + 247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61045 - 2¹ = 61043 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 (61043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 355.

It is an arithmetic number, because the mean of its divisors is an integer number (9495).

2⁶¹⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

61045 is a deficient number, since it is larger than the sum of its proper divisors (14915).

61045 is a wasteful number, since it uses less digits than its factorization.

61045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 61045 is about 247.0728637467. The cubic root of 61045 is about 39.3746493628.

The spelling of 61045 in words is "sixty-one thousand, forty-five".