61550755 has 16 divisors (see below), whose sum is σ = 86007744. Its totient is φ = 41408640.

The previous prime is 61550711. The next prime is 61550767. The reversal of 61550755 is 55705516.

61550755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61550755 - 2¹³ = 61542563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61550755.

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 15 ways as a sum of consecutive naturals, for example, 14736 + ... + 18445.

It is an arithmetic number, because the mean of its divisors is an integer number (5375484).

Almost surely, 2^61550755 is an apocalyptic number.

61550755 is a deficient number, since it is larger than the sum of its proper divisors (24456989).

61550755 is a wasteful number, since it uses less digits than its factorization.

61550755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33246.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 61550755 is about 7845.4289239021. The cubic root of 61550755 is about 394.8308948735.

The spelling of 61550755 in words is "sixty-one million, five hundred fifty thousand, seven hundred fifty-five".