52780817 has 16 divisors (see below), whose sum is σ = 56415744. Its totient is φ = 49296000.

The previous prime is 52780813. The next prime is 52780829. The reversal of 52780817 is 71808725.

52780817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52780817 - 2² = 52780813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52780811) 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 15 ways as a sum of consecutive naturals, for example, 166343 + ... + 166659.

It is an arithmetic number, because the mean of its divisors is an integer number (3525984).

Almost surely, 2^52780817 is an apocalyptic number.

It is an amenable number.

52780817 is a deficient number, since it is larger than the sum of its proper divisors (3634927).

52780817 is a wasteful number, since it uses less digits than its factorization.

52780817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 52780817 is about 7265.0407431755. The cubic root of 52780817 is about 375.1100524401.

The spelling of 52780817 in words is "fifty-two million, seven hundred eighty thousand, eight hundred seventeen".