53709971 has 4 divisors (see below), whose sum is σ = 61382832. Its totient is φ = 46037112.

The previous prime is 53709961. The next prime is 53710003. The reversal of 53709971 is 17990735.

53709971 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53709971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53709961) 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, 3836420 + ... + 3836433.

It is an arithmetic number, because the mean of its divisors is an integer number (15345708).

Almost surely, 2^53709971 is an apocalyptic number.

53709971 is a deficient number, since it is larger than the sum of its proper divisors (7672861).

53709971 is an equidigital number, since it uses as much as digits as its factorization.

53709971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7672860.

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 53709971 is about 7328.7086857099. The cubic root of 53709971 is about 377.2984079274.

The spelling of 53709971 in words is "fifty-three million, seven hundred nine thousand, nine hundred seventy-one".