61305224 has 8 divisors (see below), whose sum is σ = 114947310. Its totient is φ = 30652608.

The previous prime is 61305221. The next prime is 61305227. The reversal of 61305224 is 42250316.

61305224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61305221) and next prime (61305227).

It can be written as a sum of positive squares in only one way, i.e., 47748100 + 13557124 = 6910^2 + 3682^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 61305224.

It is not an unprimeable number, because it can be changed into a prime (61305221) 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 as a sum of consecutive naturals, namely, 3831569 + ... + 3831584.

Almost surely, 2^61305224 is an apocalyptic number.

It is an amenable number.

61305224 is a deficient number, since it is larger than the sum of its proper divisors (53642086).

61305224 is a wasteful number, since it uses less digits than its factorization.

61305224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663159 (or 7663155 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 61305224 is about 7829.7652582948. The cubic root of 61305224 is about 394.3051909744.

The spelling of 61305224 in words is "sixty-one million, three hundred five thousand, two hundred twenty-four".