Search a number
-
+
155015041 is a prime number
BaseRepresentation
bin10010011110101…
…01011110000001
3101210200120122211
421033111132001
5304140440131
623214302121
73561414616
oct1117253601
9353616584
10155015041
117a558105
1243ab7941
132616679c
141683250d
15d9205b1
hex93d5781

155015041 has 2 divisors, whose sum is σ = 155015042. Its totient is φ = 155015040.

The previous prime is 155015039. The next prime is 155015111. The reversal of 155015041 is 140510551.

It is a happy number.

155015041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154256400 + 758641 = 12420^2 + 871^2 .

It is an emirp because it is prime and its reverse (140510551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155015041 - 21 = 155015039 is a prime.

Together with 155015039, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (155015011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77507520 + 77507521.

It is an arithmetic number, because the mean of its divisors is an integer number (77507521).

Almost surely, 2155015041 is an apocalyptic number.

It is an amenable number.

155015041 is a deficient number, since it is larger than the sum of its proper divisors (1).

155015041 is an equidigital number, since it uses as much as digits as its factorization.

155015041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 155015041 is about 12450.5036444314. The cubic root of 155015041 is about 537.1859103130.

Adding to 155015041 its reverse (140510551), we get a palindrome (295525592).

The spelling of 155015041 in words is "one hundred fifty-five million, fifteen thousand, forty-one".