53388731057 has 4 divisors (see below), whose sum is σ = 53390378496. Its totient is φ = 53387083620.

The previous prime is 53388731051. The next prime is 53388731063. The reversal of 53388731057 is 75013788335.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (53388731051) and next prime (53388731063).

It is a cyclic number.

It is not a de Polignac number, because 53388731057 - 2¹⁰ = 53388730033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53388730996 and 53388731014.

It is not an unprimeable number, because it can be changed into a prime (53388731051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774113 + ... + 840254.

It is an arithmetic number, because the mean of its divisors is an integer number (13347594624).

Almost surely, 2^53388731057 is an apocalyptic number.

It is an amenable number.

53388731057 is a deficient number, since it is larger than the sum of its proper divisors (1647439).

53388731057 is a wasteful number, since it uses less digits than its factorization.

53388731057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647438.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 53388731057 in words is "fifty-three billion, three hundred eighty-eight million, seven hundred thirty-one thousand, fifty-seven".