53520660446401 has 4 divisors (see below), whose sum is σ = 53533547679172. Its totient is φ = 53507773213632.

The previous prime is 53520660446353. The next prime is 53520660446413. The reversal of 53520660446401 is 10464406602535.

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 11941067692225 + 41579592754176 = 3455585^2 + 6448224^2 .

It is a cyclic number.

It is not a de Polignac number, because 53520660446401 - 2²⁵ = 53520626891969 is a prime.

It is a super-2 number, since 2×53520660446401² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53520660446501) 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, 6443610156 + ... + 6443618461.

It is an arithmetic number, because the mean of its divisors is an integer number (13383386919793).

Almost surely, 2^{53520660446401} is an apocalyptic number.

It is an amenable number.

53520660446401 is a deficient number, since it is larger than the sum of its proper divisors (12887232771).

53520660446401 is a wasteful number, since it uses less digits than its factorization.

53520660446401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12887232770.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 53520660446401 in words is "fifty-three trillion, five hundred twenty billion, six hundred sixty million, four hundred forty-six thousand, four hundred one".