54579401857 has 4 divisors (see below), whose sum is σ = 54593483476. Its totient is φ = 54565320240.

The previous prime is 54579401839. The next prime is 54579401869. The reversal of 54579401857 is 75810497545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75810497545 = 5 ⋅15162099509.

It can be written as a sum of positive squares in 2 ways, for example, as 6066696321 + 48512705536 = 77889^2 + 220256^2 .

It is a cyclic number.

It is not a de Polignac number, because 54579401857 - 2²³ = 54571013249 is a prime.

It is a super-2 number, since 2×54579401857² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54579401798 and 54579401807.

It is not an unprimeable number, because it can be changed into a prime (54579401837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7034994 + ... + 7042747.

It is an arithmetic number, because the mean of its divisors is an integer number (13648370869).

Almost surely, 2^54579401857 is an apocalyptic number.

It is an amenable number.

54579401857 is a deficient number, since it is larger than the sum of its proper divisors (14081619).

54579401857 is a wasteful number, since it uses less digits than its factorization.

54579401857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14081618.

The product of its (nonzero) digits is 7056000, while the sum is 55.

The spelling of 54579401857 in words is "fifty-four billion, five hundred seventy-nine million, four hundred one thousand, eight hundred fifty-seven".