61055765 has 8 divisors (see below), whose sum is σ = 75054168. Its totient is φ = 47653120.

The previous prime is 61055749. The next prime is 61055801. The reversal of 61055765 is 56755016.

61055765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5597956 + 55457809 = 2366^2 + 7447^2 .

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

It is not a de Polignac number, because 61055765 - 2⁴ = 61055749 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 148712 + ... + 149121.

It is an arithmetic number, because the mean of its divisors is an integer number (9381771).

Almost surely, 2^61055765 is an apocalyptic number.

It is an amenable number.

61055765 is a deficient number, since it is larger than the sum of its proper divisors (13998403).

61055765 is a wasteful number, since it uses less digits than its factorization.

61055765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297879.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 61055765 is about 7813.8188486808. The cubic root of 61055765 is about 393.7696373846.

The spelling of 61055765 in words is "sixty-one million, fifty-five thousand, seven hundred sixty-five".