53161705 has 4 divisors (see below), whose sum is σ = 63794052. Its totient is φ = 42529360.

The previous prime is 53161687. The next prime is 53161721. The reversal of 53161705 is 50716135.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7639696 + 45522009 = 2764^2 + 6747^2 .

It is not a de Polignac number, because 53161705 - 2⁵ = 53161673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5316166 + ... + 5316175.

It is an arithmetic number, because the mean of its divisors is an integer number (15948513).

Almost surely, 2^53161705 is an apocalyptic number.

It is an amenable number.

53161705 is a deficient number, since it is larger than the sum of its proper divisors (10632347).

53161705 is a wasteful number, since it uses less digits than its factorization.

53161705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632346.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 53161705 is about 7291.2073760112. The cubic root of 53161705 is about 376.0102065473.

It can be divided in two parts, 5316 and 1705, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 53161705 in words is "fifty-three million, one hundred sixty-one thousand, seven hundred five".