53805906457 has 4 divisors (see below), whose sum is σ = 56970959796. Its totient is φ = 50640853120.

The previous prime is 53805906437. The next prime is 53805906463. The reversal of 53805906457 is 75460950835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75460950835 = 5 ⋅15092190167.

It can be written as a sum of positive squares in 2 ways, for example, as 15037871641 + 38768034816 = 122629^2 + 196896^2 .

It is a cyclic number.

It is not a de Polignac number, because 53805906457 - 2²⁷ = 53671688729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53805906437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582526644 + ... + 1582526677.

It is an arithmetic number, because the mean of its divisors is an integer number (14242739949).

Almost surely, 2^53805906457 is an apocalyptic number.

It is an amenable number.

53805906457 is a deficient number, since it is larger than the sum of its proper divisors (3165053339).

53805906457 is a wasteful number, since it uses less digits than its factorization.

53805906457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165053338.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 53805906457 in words is "fifty-three billion, eight hundred five million, nine hundred six thousand, four hundred fifty-seven".