61445166 has 8 divisors (see below), whose sum is σ = 122890344. Its totient is φ = 20481720.

The previous prime is 61445159. The next prime is 61445207. The reversal of 61445166 is 66154416.

It is a happy number.

61445166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

61445166 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 5120425 + ... + 5120436.

It is an arithmetic number, because the mean of its divisors is an integer number (15361293).

Almost surely, 2^61445166 is an apocalyptic number.

61445166 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.

61445166 is a wasteful number, since it uses less digits than its factorization.

61445166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240866.

The product of its digits is 17280, while the sum is 33.

The square root of 61445166 is about 7838.6967028965. The cubic root of 61445166 is about 394.6049910027.

The spelling of 61445166 in words is "sixty-one million, four hundred forty-five thousand, one hundred sixty-six".