53661052241 has 4 divisors (see below), whose sum is σ = 54540741684. Its totient is φ = 52781362800.

The previous prime is 53661052201. The next prime is 53661052253. The reversal of 53661052241 is 14225016635.

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 15060198400 + 38600853841 = 122720^2 + 196471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53661052241 is a prime.

It is a super-2 number, since 2×53661052241² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53661052201) 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, 439844630 + ... + 439844751.

It is an arithmetic number, because the mean of its divisors is an integer number (13635185421).

Almost surely, 2^53661052241 is an apocalyptic number.

It is an amenable number.

53661052241 is a deficient number, since it is larger than the sum of its proper divisors (879689443).

53661052241 is an equidigital number, since it uses as much as digits as its factorization.

53661052241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879689442.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 53661052241 its reverse (14225016635), we get a palindrome (67886068876).

The spelling of 53661052241 in words is "fifty-three billion, six hundred sixty-one million, fifty-two thousand, two hundred forty-one".