61500044 has 6 divisors (see below), whose sum is σ = 107625084. Its totient is φ = 30750020.

The previous prime is 61499993. The next prime is 61500059. The reversal of 61500044 is 44000516.

It is a happy number.

61500044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61499989 and 61500025.

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 as a sum of consecutive naturals, namely, 7687502 + ... + 7687509.

It is an arithmetic number, because the mean of its divisors is an integer number (17937514).

Almost surely, 2^61500044 is an apocalyptic number.

It is an amenable number.

61500044 is a deficient number, since it is larger than the sum of its proper divisors (46125040).

61500044 is a wasteful number, since it uses less digits than its factorization.

61500044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15375015 (or 15375013 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 61500044 is about 7842.1963760161. The cubic root of 61500044 is about 394.7224327827.

The spelling of 61500044 in words is "sixty-one million, five hundred thousand, forty-four".