53128263 has 16 divisors (see below), whose sum is σ = 74450816. Its totient is φ = 33657120.

The previous prime is 53128259. The next prime is 53128277. The reversal of 53128263 is 36282135.

53128263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53128263 - 2² = 53128259 is a prime.

It is a super-2 number, since 2×53128263² = 5645224658794338, which contains 22 as substring.

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 53128263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53128063) 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 15 ways as a sum of consecutive naturals, for example, 793 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (4653176).

Almost surely, 2^53128263 is an apocalyptic number.

53128263 is a deficient number, since it is larger than the sum of its proper divisors (21322553).

53128263 is a wasteful number, since it uses less digits than its factorization.

53128263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11214.

The product of its digits is 8640, while the sum is 30.

The square root of 53128263 is about 7288.9137050729. The cubic root of 53128263 is about 375.9313454513.

The spelling of 53128263 in words is "fifty-three million, one hundred twenty-eight thousand, two hundred sixty-three".