53516401 has 4 divisors (see below), whose sum is σ = 53552500. Its totient is φ = 53480304.

The previous prime is 53516399. The next prime is 53516413. The reversal of 53516401 is 10461535.

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 37834801 + 15681600 = 6151^2 + 3960^2 .

It is a cyclic number.

It is not a de Polignac number, because 53516401 - 2¹ = 53516399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53516201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15726 + ... + 18823.

It is an arithmetic number, because the mean of its divisors is an integer number (13388125).

Almost surely, 2^53516401 is an apocalyptic number.

It is an amenable number.

53516401 is a deficient number, since it is larger than the sum of its proper divisors (36099).

53516401 is a wasteful number, since it uses less digits than its factorization.

53516401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36098.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 53516401 is about 7315.4904825309. The cubic root of 53516401 is about 376.8446028891.

Adding to 53516401 its reverse (10461535), we get a palindrome (63977936).

The spelling of 53516401 in words is "fifty-three million, five hundred sixteen thousand, four hundred one".