52971709 has 4 divisors (see below), whose sum is σ = 60539104. Its totient is φ = 45404316.

The previous prime is 52971703. The next prime is 52971727. The reversal of 52971709 is 90717925.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52971709 - 2³ = 52971701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52971701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3783687 + ... + 3783700.

It is an arithmetic number, because the mean of its divisors is an integer number (15134776).

Almost surely, 2^52971709 is an apocalyptic number.

It is an amenable number.

52971709 is a deficient number, since it is larger than the sum of its proper divisors (7567395).

52971709 is an equidigital number, since it uses as much as digits as its factorization.

52971709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567394.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 52971709 is about 7278.1665960598. The cubic root of 52971709 is about 375.5617276269.

The spelling of 52971709 in words is "fifty-two million, nine hundred seventy-one thousand, seven hundred nine".