53163709 has 8 divisors (see below), whose sum is σ = 57813048. Its totient is φ = 48683520.

The previous prime is 53163707. The next prime is 53163727. The reversal of 53163709 is 90736135.

It can be written as a sum of positive squares in 4 ways, for example, as 8139609 + 45024100 = 2853^2 + 6710^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53163709 - 2¹ = 53163707 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 (53163701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41632 + ... + 42889.

It is an arithmetic number, because the mean of its divisors is an integer number (7226631).

Almost surely, 2^53163709 is an apocalyptic number.

It is an amenable number.

53163709 is a deficient number, since it is larger than the sum of its proper divisors (4649339).

53163709 is a wasteful number, since it uses less digits than its factorization.

53163709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84575.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 53163709 is about 7291.3448005152. The cubic root of 53163709 is about 376.0149312201.

It can be divided in two parts, 5316 and 3709, that added together give a square (9025 = 95²).

The spelling of 53163709 in words is "fifty-three million, one hundred sixty-three thousand, seven hundred nine".