52178348357 has 4 divisors (see below), whose sum is σ = 52185964716. Its totient is φ = 52170732000.

The previous prime is 52178348333. The next prime is 52178348381. The reversal of 52178348357 is 75384387125.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (52178348333) and next prime (52178348381).

It can be written as a sum of positive squares in 2 ways, for example, as 17614332961 + 34564015396 = 132719^2 + 185914^2 .

It is a cyclic number.

It is not a de Polignac number, because 52178348357 - 2¹⁴ = 52178331973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52178348299 and 52178348308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52178348857) 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, 3797894 + ... + 3811607.

It is an arithmetic number, because the mean of its divisors is an integer number (13046491179).

Almost surely, 2^52178348357 is an apocalyptic number.

It is an amenable number.

52178348357 is a deficient number, since it is larger than the sum of its proper divisors (7616359).

52178348357 is an equidigital number, since it uses as much as digits as its factorization.

52178348357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616358.

The product of its digits is 5644800, while the sum is 53.

The spelling of 52178348357 in words is "fifty-two billion, one hundred seventy-eight million, three hundred forty-eight thousand, three hundred fifty-seven".