54785687431 has 4 divisors (see below), whose sum is σ = 54789108264. Its totient is φ = 54782266600.

The previous prime is 54785687423. The next prime is 54785687441. The reversal of 54785687431 is 13478658745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13478658745 = 5 ⋅2695731749.

It is a cyclic number.

It is not a de Polignac number, because 54785687431 - 2³ = 54785687423 is a prime.

It is a super-2 number, since 2×54785687431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54785687401) 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, 1686280 + ... + 1718461.

It is an arithmetic number, because the mean of its divisors is an integer number (13697277066).

Almost surely, 2^54785687431 is an apocalyptic number.

54785687431 is a deficient number, since it is larger than the sum of its proper divisors (3420833).

54785687431 is a wasteful number, since it uses less digits than its factorization.

54785687431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420832.

The product of its digits is 22579200, while the sum is 58.

The spelling of 54785687431 in words is "fifty-four billion, seven hundred eighty-five million, six hundred eighty-seven thousand, four hundred thirty-one".