51133863 has 8 divisors (see below), whose sum is σ = 74376576. Its totient is φ = 30990200.

The previous prime is 51133843. The next prime is 51133877. The reversal of 51133863 is 36833115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51133863 - 2¹³ = 51125671 is a prime.

It is a super-2 number, since 2×51133863² = 5229343890605538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51133863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51133843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774723 + ... + 774788.

It is an arithmetic number, because the mean of its divisors is an integer number (9297072).

Almost surely, 2^51133863 is an apocalyptic number.

51133863 is a deficient number, since it is larger than the sum of its proper divisors (23242713).

51133863 is a wasteful number, since it uses less digits than its factorization.

51133863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549525.

The product of its digits is 6480, while the sum is 30.

The square root of 51133863 is about 7150.7945712347. The cubic root of 51133863 is about 371.1671519832.

Adding to 51133863 its reverse (36833115), we get a palindrome (87966978).

The spelling of 51133863 in words is "fifty-one million, one hundred thirty-three thousand, eight hundred sixty-three".