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54642824593 = 77806117799
BaseRepresentation
bin110010111000111101…
…110101010110010001
312020001011010002122021
4302320331311112101
51343402030341333
641034053211441
73643046226340
oct627075652621
9166034102567
1054642824593
11211a04a4975
12a70b930b81
1351ca902406
1429051b7b57
15164c29682d
hexcb8f75591

54642824593 has 4 divisors (see below), whose sum is σ = 62448942400. Its totient is φ = 46836706788.

The previous prime is 54642824581. The next prime is 54642824611. The reversal of 54642824593 is 39542824645.

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 an emirpimes, since its reverse is a distinct semiprime: 39542824645 = 57908564929.

It is a cyclic number.

It is not a de Polignac number, because 54642824593 - 29 = 54642824081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54642824593.

It is not an unprimeable number, because it can be changed into a prime (54642824503) 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, 3903058893 + ... + 3903058906.

It is an arithmetic number, because the mean of its divisors is an integer number (15612235600).

Almost surely, 254642824593 is an apocalyptic number.

It is an amenable number.

54642824593 is a deficient number, since it is larger than the sum of its proper divisors (7806117807).

54642824593 is an equidigital number, since it uses as much as digits as its factorization.

54642824593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806117806.

The product of its digits is 8294400, while the sum is 52.

Adding to 54642824593 its sum of digits (52), we get a palindrome (54642824645).

The spelling of 54642824593 in words is "fifty-four billion, six hundred forty-two million, eight hundred twenty-four thousand, five hundred ninety-three".

Divisors: 1 7 7806117799 54642824593