61530544 has 20 divisors (see below), whose sum is σ = 119951896. Its totient is φ = 30575232.

The previous prime is 61530541. The next prime is 61530551. The reversal of 61530544 is 44503516.

61530544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61530541) 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 in 3 ways as a sum of consecutive naturals, for example, 9189 + ... + 14404.

Almost surely, 2^61530544 is an apocalyptic number.

It is an amenable number.

61530544 is a deficient number, since it is larger than the sum of its proper divisors (58421352).

61530544 is a wasteful number, since it uses less digits than its factorization.

61530544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23764 (or 23758 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 61530544 is about 7844.1407432554. The cubic root of 61530544 is about 394.7876741699.

The spelling of 61530544 in words is "sixty-one million, five hundred thirty thousand, five hundred forty-four".