53156643 has 8 divisors (see below), whose sum is σ = 72523968. Its totient is φ = 34613544.

The previous prime is 53156641. The next prime is 53156659. The reversal of 53156643 is 34665135.

53156643 is nontrivially palindromic in base 16.

53156643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 53156643 - 2¹ = 53156641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53156641) 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 7 ways as a sum of consecutive naturals, for example, 205905 + ... + 206162.

It is an arithmetic number, because the mean of its divisors is an integer number (9065496).

Almost surely, 2^53156643 is an apocalyptic number.

53156643 is a deficient number, since it is larger than the sum of its proper divisors (19367325).

53156643 is a wasteful number, since it uses less digits than its factorization.

53156643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412113.

The product of its digits is 32400, while the sum is 33.

The square root of 53156643 is about 7290.8602373108. The cubic root of 53156643 is about 375.9982717402.

The spelling of 53156643 in words is "fifty-three million, one hundred fifty-six thousand, six hundred forty-three".