53505613501 has 2 divisors, whose sum is σ = 53505613502. Its totient is φ = 53505613500.

The previous prime is 53505613471. The next prime is 53505613507. The reversal of 53505613501 is 10531650535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41223211225 + 12282402276 = 203035^2 + 110826^2 .

It is a cyclic number.

It is not a de Polignac number, because 53505613501 - 2²¹ = 53503516349 is a prime.

It is a super-2 number, since 2×53505613501² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53505613507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26752806750 + 26752806751.

It is an arithmetic number, because the mean of its divisors is an integer number (26752806751).

Almost surely, 2^53505613501 is an apocalyptic number.

It is an amenable number.

53505613501 is a deficient number, since it is larger than the sum of its proper divisors (1).

53505613501 is an equidigital number, since it uses as much as digits as its factorization.

53505613501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33750, while the sum is 34.

The spelling of 53505613501 in words is "fifty-three billion, five hundred five million, six hundred thirteen thousand, five hundred one".