54415908557 has 4 divisors (see below), whose sum is σ = 54416551200. Its totient is φ = 54415265916.

The previous prime is 54415908539. The next prime is 54415908601. The reversal of 54415908557 is 75580951445.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 54415908557 - 2⁶ = 54415908493 is a prime.

It is a super-2 number, since 2×54415908557² (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 = 54415908499 and 54415908508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54415908457) 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, 170807 + ... + 371492.

It is an arithmetic number, because the mean of its divisors is an integer number (13604137800).

Almost surely, 2^54415908557 is an apocalyptic number.

It is an amenable number.

54415908557 is a deficient number, since it is larger than the sum of its proper divisors (642643).

54415908557 is a wasteful number, since it uses less digits than its factorization.

54415908557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642642.

The product of its (nonzero) digits is 5040000, while the sum is 53.

The spelling of 54415908557 in words is "fifty-four billion, four hundred fifteen million, nine hundred eight thousand, five hundred fifty-seven".