53091309657 has 8 divisors (see below), whose sum is σ = 72701613376. Its totient is φ = 34437606192.

The previous prime is 53091309647. The next prime is 53091309671. The reversal of 53091309657 is 75690319035.

53091309657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 53091309657 - 2¹¹ = 53091307609 is a prime.

It is a super-2 number, since 2×53091309657² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53091309647) 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, 239149933 + ... + 239150154.

It is an arithmetic number, because the mean of its divisors is an integer number (9087701672).

Almost surely, 2^53091309657 is an apocalyptic number.

It is an amenable number.

53091309657 is a deficient number, since it is larger than the sum of its proper divisors (19610303719).

53091309657 is a wasteful number, since it uses less digits than its factorization.

53091309657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478300127.

The product of its (nonzero) digits is 765450, while the sum is 48.

The spelling of 53091309657 in words is "fifty-three billion, ninety-one million, three hundred nine thousand, six hundred fifty-seven".