53436161 has 4 divisors (see below), whose sum is σ = 54739524. Its totient is φ = 52132800.

The previous prime is 53436109. The next prime is 53436169. The reversal of 53436161 is 16163435.

It is a happy number.

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 29767936 + 23668225 = 5456^2 + 4865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53436161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53436169) 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, 651620 + ... + 651701.

It is an arithmetic number, because the mean of its divisors is an integer number (13684881).

Almost surely, 2^53436161 is an apocalyptic number.

It is an amenable number.

53436161 is a deficient number, since it is larger than the sum of its proper divisors (1303363).

53436161 is a wasteful number, since it uses less digits than its factorization.

53436161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303362.

The product of its digits is 6480, while the sum is 29.

The square root of 53436161 is about 7310.0041723654. The cubic root of 53436161 is about 376.6561675966.

Adding to 53436161 its reverse (16163435), we get a palindrome (69599596).

The spelling of 53436161 in words is "fifty-three million, four hundred thirty-six thousand, one hundred sixty-one".