52785791 has 4 divisors (see below), whose sum is σ = 54212472. Its totient is φ = 51359112.

The previous prime is 52785769. The next prime is 52785793. The reversal of 52785791 is 19758725.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52785791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52785793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713285 + ... + 713358.

It is an arithmetic number, because the mean of its divisors is an integer number (13553118).

Almost surely, 2^52785791 is an apocalyptic number.

52785791 is a deficient number, since it is larger than the sum of its proper divisors (1426681).

52785791 is a wasteful number, since it uses less digits than its factorization.

52785791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426680.

The product of its digits is 176400, while the sum is 44.

The square root of 52785791 is about 7265.3830594126. The cubic root of 52785791 is about 375.1218353751.

The spelling of 52785791 in words is "fifty-two million, seven hundred eighty-five thousand, seven hundred ninety-one".