Search a number
-
+
245105383 = 2129115127
BaseRepresentation
bin11101001110000…
…00001011100111
3122002012122101011
432213000023213
51000221333013
640153243051
76034234645
oct1647001347
9562178334
10245105383
111163a0336
126a103487
133ba1a893
14247a4195
15167b8c3d
hexe9c02e7

245105383 has 4 divisors (see below), whose sum is σ = 245222640. Its totient is φ = 244988128.

The previous prime is 245105359. The next prime is 245105401. The reversal of 245105383 is 383501542.

245105383 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.

It is a cyclic number.

It is not a de Polignac number, because 245105383 - 221 = 243008231 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245105683) 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, 55435 + ... + 59692.

It is an arithmetic number, because the mean of its divisors is an integer number (61305660).

Almost surely, 2245105383 is an apocalyptic number.

245105383 is a deficient number, since it is larger than the sum of its proper divisors (117257).

245105383 is a wasteful number, since it uses less digits than its factorization.

245105383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117256.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 245105383 is about 15655.8418170343. The cubic root of 245105383 is about 625.8221781228.

The spelling of 245105383 in words is "two hundred forty-five million, one hundred five thousand, three hundred eighty-three".

Divisors: 1 2129 115127 245105383