53051447657 has 8 divisors (see below), whose sum is σ = 57184424136. Its totient is φ = 48925913472.

The previous prime is 53051447629. The next prime is 53051447693. The reversal of 53051447657 is 75674415035.

53051447657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1769127721 + 51282319936 = 42061^2 + 226456^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53051447657 - 2¹⁰ = 53051446633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53051447257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845758 + ... + 1874279.

It is an arithmetic number, because the mean of its divisors is an integer number (7148053017).

Almost surely, 2^53051447657 is an apocalyptic number.

It is an amenable number.

53051447657 is a deficient number, since it is larger than the sum of its proper divisors (4132976479).

53051447657 is a wasteful number, since it uses less digits than its factorization.

53051447657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721147.

The product of its (nonzero) digits is 1764000, while the sum is 47.

The spelling of 53051447657 in words is "fifty-three billion, fifty-one million, four hundred forty-seven thousand, six hundred fifty-seven".