61161044 has 12 divisors (see below), whose sum is σ = 122322144. Its totient is φ = 26211864.

The previous prime is 61161043. The next prime is 61161049. The reversal of 61161044 is 44016116.

61161044 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61161043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092134 + ... + 1092189.

It is an arithmetic number, because the mean of its divisors is an integer number (10193512).

Almost surely, 2^61161044 is an apocalyptic number.

It is an amenable number.

61161044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61161044 is a wasteful number, since it uses less digits than its factorization.

61161044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184334 (or 2184332 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 61161044 is about 7820.5526658926. The cubic root of 61161044 is about 393.9958342556.

The spelling of 61161044 in words is "sixty-one million, one hundred sixty-one thousand, forty-four".