53245378757 has 4 divisors (see below), whose sum is σ = 53360878956. Its totient is φ = 53129878560.

The previous prime is 53245378727. The next prime is 53245378811. The reversal of 53245378757 is 75787354235.

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 5533276996 + 47712101761 = 74386^2 + 218431^2 .

It is a cyclic number.

It is not a de Polignac number, because 53245378757 - 2¹⁰ = 53245377733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53245378727) 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, 57749408 + ... + 57750329.

It is an arithmetic number, because the mean of its divisors is an integer number (13340219739).

Almost surely, 2^53245378757 is an apocalyptic number.

It is an amenable number.

53245378757 is a deficient number, since it is larger than the sum of its proper divisors (115500199).

53245378757 is a wasteful number, since it uses less digits than its factorization.

53245378757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115500198.

The product of its digits is 24696000, while the sum is 56.

The spelling of 53245378757 in words is "fifty-three billion, two hundred forty-five million, three hundred seventy-eight thousand, seven hundred fifty-seven".