53170709 has 4 divisors (see below), whose sum is σ = 53589504. Its totient is φ = 52751916.

The previous prime is 53170703. The next prime is 53170723. The reversal of 53170709 is 90707135.

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 a de Polignac number, because none of the positive numbers 2^k-53170709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53170703) 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, 209207 + ... + 209460.

It is an arithmetic number, because the mean of its divisors is an integer number (13397376).

Almost surely, 2^53170709 is an apocalyptic number.

It is an amenable number.

53170709 is a deficient number, since it is larger than the sum of its proper divisors (418795).

53170709 is a wasteful number, since it uses less digits than its factorization.

53170709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418794.

The product of its (nonzero) digits is 6615, while the sum is 32.

The square root of 53170709 is about 7291.8248059042. The cubic root of 53170709 is about 376.0314336366.

The spelling of 53170709 in words is "fifty-three million, one hundred seventy thousand, seven hundred nine".