54239539657 has 4 divisors (see below), whose sum is σ = 54240665040. Its totient is φ = 54238414276.

The previous prime is 54239539643. The next prime is 54239539727. The reversal of 54239539657 is 75693593245.

54239539657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 54239539657 - 2¹¹ = 54239537609 is a prime.

It is a super-3 number, since 3×54239539657³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54239539957) 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, 487003 + ... + 587920.

It is an arithmetic number, because the mean of its divisors is an integer number (13560166260).

Almost surely, 2^54239539657 is an apocalyptic number.

It is an amenable number.

54239539657 is a deficient number, since it is larger than the sum of its proper divisors (1125383).

54239539657 is a wasteful number, since it uses less digits than its factorization.

54239539657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125382.

The product of its digits is 30618000, while the sum is 58.

The spelling of 54239539657 in words is "fifty-four billion, two hundred thirty-nine million, five hundred thirty-nine thousand, six hundred fifty-seven".