Search a number
-
+
155603113 = 636724439
BaseRepresentation
bin10010100011001…
…01000010101001
3101211210110100021
421101211002221
5304313244423
623235040441
73566414251
oct1121450251
9354713307
10155603113
117a919a16
1244140121
1326311363
1416946961
15d9d995d
hex94650a9

155603113 has 4 divisors (see below), whose sum is σ = 155633920. Its totient is φ = 155572308.

The previous prime is 155603087. The next prime is 155603117. The reversal of 155603113 is 311306551.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-155603113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155603117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5853 + ... + 18586.

It is an arithmetic number, because the mean of its divisors is an integer number (38908480).

Almost surely, 2155603113 is an apocalyptic number.

It is an amenable number.

155603113 is a deficient number, since it is larger than the sum of its proper divisors (30807).

155603113 is an equidigital number, since it uses as much as digits as its factorization.

155603113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30806.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 155603113 is about 12474.0976827985. The cubic root of 155603113 is about 537.8643506213.

Adding to 155603113 its reverse (311306551), we get a palindrome (466909664).

The spelling of 155603113 in words is "one hundred fifty-five million, six hundred three thousand, one hundred thirteen".

Divisors: 1 6367 24439 155603113