Base | Representation |
---|---|
bin | 10010100010000… |
… | …00001101000111 |
3 | 101211111210101001 |
4 | 21101000031013 |
5 | 304243432411 |
6 | 23231514131 |
7 | 3565215334 |
oct | 1121001507 |
9 | 354453331 |
10 | 155452231 |
11 | 7a826620 |
12 | 44088947 |
13 | 2628a78c |
14 | 1690798b |
15 | d9a9dc1 |
hex | 9440347 |
155452231 has 8 divisors (see below), whose sum is σ = 171264528. Its totient is φ = 139920000.
The previous prime is 155452223. The next prime is 155452237. The reversal of 155452231 is 132254551.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 155452231 - 23 = 155452223 is a prime.
It is a super-2 number, since 2×1554522312 = 48330792245754722, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 155452231.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (155452237) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68850 + ... + 71071.
It is an arithmetic number, because the mean of its divisors is an integer number (21408066).
Almost surely, 2155452231 is an apocalyptic number.
155452231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
155452231 is a deficient number, since it is larger than the sum of its proper divisors (15812297).
155452231 is a wasteful number, since it uses less digits than its factorization.
155452231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 140033.
The product of its digits is 6000, while the sum is 28.
The square root of 155452231 is about 12468.0484038201. The cubic root of 155452231 is about 537.6904460163.
The spelling of 155452231 in words is "one hundred fifty-five million, four hundred fifty-two thousand, two hundred thirty-one".
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