53121766 has 8 divisors (see below), whose sum is σ = 83147184. Its totient is φ = 25406040.

The previous prime is 53121749. The next prime is 53121767. The reversal of 53121766 is 66712135.

53121766 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53121767) 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, 577365 + ... + 577456.

It is an arithmetic number, because the mean of its divisors is an integer number (10393398).

Almost surely, 2^53121766 is an apocalyptic number.

53121766 is a deficient number, since it is larger than the sum of its proper divisors (30025418).

53121766 is a wasteful number, since it uses less digits than its factorization.

53121766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154846.

The product of its digits is 7560, while the sum is 31.

The square root of 53121766 is about 7288.4680146105. The cubic root of 53121766 is about 375.9160207422.

The spelling of 53121766 in words is "fifty-three million, one hundred twenty-one thousand, seven hundred sixty-six".