Search a number
-
+
155244359 is a prime number
BaseRepresentation
bin10010100000011…
…01011101000111
3101211010020020002
421100031131013
5304220304414
623223231515
73563361314
oct1120153507
9354106202
10155244359
117a6a4426
1243ba859b
1326216c8a
1416891d0b
15d9684de
hex940d747

155244359 has 2 divisors, whose sum is σ = 155244360. Its totient is φ = 155244358.

The previous prime is 155244347. The next prime is 155244361. The reversal of 155244359 is 953442551.

It is a strong prime.

It is an emirp because it is prime and its reverse (953442551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155244359 - 212 = 155240263 is a prime.

It is a super-2 number, since 2×1552443592 = 48201622002641762, which contains 22 as substring.

Together with 155244361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155244059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77622179 + 77622180.

It is an arithmetic number, because the mean of its divisors is an integer number (77622180).

Almost surely, 2155244359 is an apocalyptic number.

155244359 is a deficient number, since it is larger than the sum of its proper divisors (1).

155244359 is an equidigital number, since it uses as much as digits as its factorization.

155244359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 38.

The square root of 155244359 is about 12459.7094267884. The cubic root of 155244359 is about 537.4506710814.

The spelling of 155244359 in words is "one hundred fifty-five million, two hundred forty-four thousand, three hundred fifty-nine".