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144395701 = 953151517
BaseRepresentation
bin10001001101101…
…00110110110101
3101001201001122221
420212310312311
5243431130301
622154522341
73402225502
oct1046646665
9331631587
10144395701
117456469a
12404363b1
1323bb9058
141526a4a9
15ca23da1
hex89b4db5

144395701 has 4 divisors (see below), whose sum is σ = 144548172. Its totient is φ = 144243232.

The previous prime is 144395683. The next prime is 144395711. The reversal of 144395701 is 107593441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114704100 + 29691601 = 10710^2 + 5449^2 .

It is a cyclic number.

It is not a de Polignac number, because 144395701 - 211 = 144393653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144395711) 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, 74806 + ... + 76711.

It is an arithmetic number, because the mean of its divisors is an integer number (36137043).

Almost surely, 2144395701 is an apocalyptic number.

It is an amenable number.

144395701 is a deficient number, since it is larger than the sum of its proper divisors (152471).

144395701 is an equidigital number, since it uses as much as digits as its factorization.

144395701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152470.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 144395701 is about 12016.4762305761. The cubic root of 144395701 is about 524.6279462237.

The spelling of 144395701 in words is "one hundred forty-four million, three hundred ninety-five thousand, seven hundred one".

Divisors: 1 953 151517 144395701