Search a number
-
+
145145411 = 821176791
BaseRepresentation
bin10001010011010…
…11111001000011
3101010010011001222
420221223321003
5244124123121
622222545255
73411500315
oct1051537103
9333104058
10145145411
1174a26994
124073822b
13240bc378
14153c37b5
15cb210ab
hex8a6be43

145145411 has 4 divisors (see below), whose sum is σ = 145323024. Its totient is φ = 144967800.

The previous prime is 145145359. The next prime is 145145419. The reversal of 145145411 is 114541541.

145145411 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, and also an emirpimes, since its reverse is a distinct semiprime: 114541541 = 234980067.

It is a cyclic number.

It is not a de Polignac number, because 145145411 - 26 = 145145347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145145419) 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, 87575 + ... + 89216.

It is an arithmetic number, because the mean of its divisors is an integer number (36330756).

Almost surely, 2145145411 is an apocalyptic number.

145145411 is a deficient number, since it is larger than the sum of its proper divisors (177613).

145145411 is an equidigital number, since it uses as much as digits as its factorization.

145145411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177612.

The product of its digits is 1600, while the sum is 26.

The square root of 145145411 is about 12047.6309289420. The cubic root of 145145411 is about 525.5343445466.

Adding to 145145411 its reverse (114541541), we get a palindrome (259686952).

The spelling of 145145411 in words is "one hundred forty-five million, one hundred forty-five thousand, four hundred eleven".

Divisors: 1 821 176791 145145411