52963781 has 4 divisors (see below), whose sum is σ = 57037932. Its totient is φ = 48889632.

The previous prime is 52963747. The next prime is 52963787. The reversal of 52963781 is 18736925.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21771556 + 31192225 = 4666^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 52963781 - 2²² = 48769477 is a prime.

It is a super-2 number, since 2×52963781² = 5610324195631922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52963787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037056 + ... + 2037081.

It is an arithmetic number, because the mean of its divisors is an integer number (14259483).

Almost surely, 2^52963781 is an apocalyptic number.

It is an amenable number.

52963781 is a deficient number, since it is larger than the sum of its proper divisors (4074151).

52963781 is a wasteful number, since it uses less digits than its factorization.

52963781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074150.

The product of its digits is 90720, while the sum is 41.

The square root of 52963781 is about 7277.6219330218. The cubic root of 52963781 is about 375.5429905690.

The spelling of 52963781 in words is "fifty-two million, nine hundred sixty-three thousand, seven hundred eighty-one".