52780855 has 4 divisors (see below), whose sum is σ = 63337032. Its totient is φ = 42224680.

The previous prime is 52780843. The next prime is 52780891. The reversal of 52780855 is 55808725.

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

It is not a de Polignac number, because 52780855 - 2¹¹ = 52778807 is a prime.

It is a Duffinian number.

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, 5278081 + ... + 5278090.

It is an arithmetic number, because the mean of its divisors is an integer number (15834258).

Almost surely, 2^52780855 is an apocalyptic number.

52780855 is a deficient number, since it is larger than the sum of its proper divisors (10556177).

52780855 is a wasteful number, since it uses less digits than its factorization.

52780855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556176.

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 52780855 is about 7265.0433584391. The cubic root of 52780855 is about 375.1101424613.

It can be divided in two parts, 52780 and 855, that added together give a palindrome (53635).

The spelling of 52780855 in words is "fifty-two million, seven hundred eighty thousand, eight hundred fifty-five".