52780055 has 8 divisors (see below), whose sum is σ = 66089952. Its totient is φ = 40388128.

The previous prime is 52780037. The next prime is 52780061. The reversal of 52780055 is 55008725.

It is a happy number.

52780055 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 52780055 - 2⁸ = 52779799 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, 229364 + ... + 229593.

It is an arithmetic number, because the mean of its divisors is an integer number (8261244).

Almost surely, 2^52780055 is an apocalyptic number.

52780055 is a deficient number, since it is larger than the sum of its proper divisors (13309897).

52780055 is a wasteful number, since it uses less digits than its factorization.

52780055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458985.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 52780055 is about 7264.9883000594. The cubic root of 52780055 is about 375.1082472689.

The spelling of 52780055 in words is "fifty-two million, seven hundred eighty thousand, fifty-five".