53524523070721 has 4 divisors (see below), whose sum is σ = 53662118246100. Its totient is φ = 53386927895344.

The previous prime is 53524523070659. The next prime is 53524523070731. The reversal of 53524523070721 is 12707032542535.

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 9878826163600 + 43645696907121 = 3143060^2 + 6606489^2 .

It is a cyclic number.

It is not a de Polignac number, because 53524523070721 - 2⁴³ = 44728430048513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53524523070731) 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, 68797587106 + ... + 68797587883.

It is an arithmetic number, because the mean of its divisors is an integer number (13415529561525).

Almost surely, 2^{53524523070721} is an apocalyptic number.

It is an amenable number.

53524523070721 is a deficient number, since it is larger than the sum of its proper divisors (137595175379).

53524523070721 is a wasteful number, since it uses less digits than its factorization.

53524523070721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137595175378.

The product of its (nonzero) digits is 1764000, while the sum is 46.

The spelling of 53524523070721 in words is "fifty-three trillion, five hundred twenty-four billion, five hundred twenty-three million, seventy thousand, seven hundred twenty-one".