61384255 has 4 divisors (see below), whose sum is σ = 73661112. Its totient is φ = 49107400.

The previous prime is 61384243. The next prime is 61384273. The reversal of 61384255 is 55248316.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61384255 - 2²¹ = 59287103 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 61384255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6138421 + ... + 6138430.

It is an arithmetic number, because the mean of its divisors is an integer number (18415278).

Almost surely, 2^61384255 is an apocalyptic number.

61384255 is a deficient number, since it is larger than the sum of its proper divisors (12276857).

61384255 is a wasteful number, since it uses less digits than its factorization.

61384255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12276856.

The product of its digits is 28800, while the sum is 34.

The square root of 61384255 is about 7834.8104635658. The cubic root of 61384255 is about 394.4745563793.

The spelling of 61384255 in words is "sixty-one million, three hundred eighty-four thousand, two hundred fifty-five".