53135641 has 4 divisors (see below), whose sum is σ = 57223012. Its totient is φ = 49048272.

The previous prime is 53135639. The next prime is 53135701. The reversal of 53135641 is 14653135.

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 35462025 + 17673616 = 5955^2 + 4204^2 .

It is not a de Polignac number, because 53135641 - 2¹ = 53135639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53135141) 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, 2043666 + ... + 2043691.

It is an arithmetic number, because the mean of its divisors is an integer number (14305753).

Almost surely, 2^53135641 is an apocalyptic number.

It is an amenable number.

53135641 is a deficient number, since it is larger than the sum of its proper divisors (4087371).

53135641 is a wasteful number, since it uses less digits than its factorization.

53135641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087370.

The product of its digits is 5400, while the sum is 28.

The square root of 53135641 is about 7289.4197985848. The cubic root of 53135641 is about 375.9487466920.

Adding to 53135641 its reverse (14653135), we get a palindrome (67788776).

The spelling of 53135641 in words is "fifty-three million, one hundred thirty-five thousand, six hundred forty-one".