53443235032561 has 32 divisors (see below), whose sum is σ = 63436337786880. Its totient is φ = 44482131201600.

The previous prime is 53443235032553. The next prime is 53443235032609. The reversal of 53443235032561 is 16523053234435.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53443235032561 - 2³ = 53443235032553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53443235032501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 877555 + ... + 10375768.

It is an arithmetic number, because the mean of its divisors is an integer number (1982385555840).

Almost surely, 2^{53443235032561} is an apocalyptic number.

It is an amenable number.

53443235032561 is a deficient number, since it is larger than the sum of its proper divisors (9993102754319).

53443235032561 is a wasteful number, since it uses less digits than its factorization.

53443235032561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11254117.

The product of its (nonzero) digits is 3888000, while the sum is 46.

Adding to 53443235032561 its reverse (16523053234435), we get a palindrome (69966288266996).

The spelling of 53443235032561 in words is "fifty-three trillion, four hundred forty-three billion, two hundred thirty-five million, thirty-two thousand, five hundred sixty-one".