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144152401 = 178479553
BaseRepresentation
bin10001001011110…
…01011101010001
3101001020200220211
420211321131101
5243400334101
622145404121
73400163251
oct1045713521
9331220824
10144152401
1174408918
1240339641
1323b323a3
1415205961
15c9c6c51
hex8979751

144152401 has 4 divisors (see below), whose sum is σ = 152631972. Its totient is φ = 135672832.

The previous prime is 144152389. The next prime is 144152479. The reversal of 144152401 is 104251441.

144152401 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: 104251441 = 714893063.

It can be written as a sum of positive squares in 2 ways, for example, as 116316225 + 27836176 = 10785^2 + 5276^2 .

It is a cyclic number.

It is not a de Polignac number, because 144152401 - 25 = 144152369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144150401) 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, 4239760 + ... + 4239793.

It is an arithmetic number, because the mean of its divisors is an integer number (38157993).

Almost surely, 2144152401 is an apocalyptic number.

It is an amenable number.

144152401 is a deficient number, since it is larger than the sum of its proper divisors (8479571).

144152401 is an equidigital number, since it uses as much as digits as its factorization.

144152401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8479570.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 144152401 is about 12006.3483624289. The cubic root of 144152401 is about 524.3331227262. Note that the first 3 decimals are identical.

The spelling of 144152401 in words is "one hundred forty-four million, one hundred fifty-two thousand, four hundred one".

Divisors: 1 17 8479553 144152401