52784551 has 4 divisors (see below), whose sum is σ = 53050000. Its totient is φ = 52519104.

The previous prime is 52784539. The next prime is 52784573. The reversal of 52784551 is 15548725.

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-52784551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52784551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52784051) 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, 132426 + ... + 132823.

It is an arithmetic number, because the mean of its divisors is an integer number (13262500).

Almost surely, 2^52784551 is an apocalyptic number.

52784551 is a deficient number, since it is larger than the sum of its proper divisors (265449).

52784551 is a wasteful number, since it uses less digits than its factorization.

52784551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265448.

The product of its digits is 56000, while the sum is 37.

The square root of 52784551 is about 7265.2977227365. The cubic root of 52784551 is about 375.1188980018.

It can be divided in two parts, 52784 and 551, that added together give a palindrome (53335).

The spelling of 52784551 in words is "fifty-two million, seven hundred eighty-four thousand, five hundred fifty-one".