52263681 has 4 divisors (see below), whose sum is σ = 69684912. Its totient is φ = 34842452.

The previous prime is 52263677. The next prime is 52263691. The reversal of 52263681 is 18636225.

52263681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52263681 - 2² = 52263677 is a prime.

It is a super-2 number, since 2×52263681² = 5462984703339522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52263691) 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 3 ways as a sum of consecutive naturals, for example, 8710611 + ... + 8710616.

It is an arithmetic number, because the mean of its divisors is an integer number (17421228).

Almost surely, 2^52263681 is an apocalyptic number.

It is an amenable number.

52263681 is a deficient number, since it is larger than the sum of its proper divisors (17421231).

52263681 is a wasteful number, since it uses less digits than its factorization.

52263681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17421230.

The product of its digits is 17280, while the sum is 33.

The square root of 52263681 is about 7229.3624200202. The cubic root of 52263681 is about 373.8809447851.

The spelling of 52263681 in words is "fifty-two million, two hundred sixty-three thousand, six hundred eighty-one".