55784071 has 8 divisors (see below), whose sum is σ = 64219680. Its totient is φ = 47465088.

The previous prime is 55784063. The next prime is 55784077. The reversal of 55784071 is 17048755.

55784071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55784071 - 2³ = 55784063 is a prime.

It is a super-2 number, since 2×55784071² = 6223725154666082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55784071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55784077) 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 7 ways as a sum of consecutive naturals, for example, 28126 + ... + 30043.

It is an arithmetic number, because the mean of its divisors is an integer number (8027460).

Almost surely, 2^55784071 is an apocalyptic number.

55784071 is a deficient number, since it is larger than the sum of its proper divisors (8435609).

55784071 is a wasteful number, since it uses less digits than its factorization.

55784071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58313.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 55784071 is about 7468.8734759668. The cubic root of 55784071 is about 382.0938682727.

The spelling of 55784071 in words is "fifty-five million, seven hundred eighty-four thousand, seventy-one".