53537035081 has 2 divisors, whose sum is σ = 53537035082. Its totient is φ = 53537035080.

The previous prime is 53537035049. The next prime is 53537035099. The reversal of 53537035081 is 18053073535.

53537035081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49871822400 + 3665212681 = 223320^2 + 60541^2 .

It is a cyclic number.

It is not a de Polignac number, because 53537035081 - 2⁵ = 53537035049 is a prime.

It is a super-2 number, since 2×53537035081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53537035021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26768517540 + 26768517541.

It is an arithmetic number, because the mean of its divisors is an integer number (26768517541).

Almost surely, 2^53537035081 is an apocalyptic number.

It is an amenable number.

53537035081 is a deficient number, since it is larger than the sum of its proper divisors (1).

53537035081 is an equidigital number, since it uses as much as digits as its factorization.

53537035081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 53537035081 in words is "fifty-three billion, five hundred thirty-seven million, thirty-five thousand, eighty-one".