61444755 has 24 divisors (see below), whose sum is σ = 108517968. Its totient is φ = 32150976.

The previous prime is 61444741. The next prime is 61444763. The reversal of 61444755 is 55744416.

61444755 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 61444755 - 2⁵ = 61444723 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 10497 + ... + 15266.

It is an arithmetic number, because the mean of its divisors is an integer number (4521582).

Almost surely, 2^61444755 is an apocalyptic number.

61444755 is a deficient number, since it is larger than the sum of its proper divisors (47073213).

61444755 is a wasteful number, since it uses less digits than its factorization.

61444755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25827 (or 25824 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 61444755 is about 7838.6704867599. The cubic root of 61444755 is about 394.6041111775.

It can be divided in two parts, 614 and 44755, that added together give a square (45369 = 213²).

The spelling of 61444755 in words is "sixty-one million, four hundred forty-four thousand, seven hundred fifty-five".