144745157 has 8 divisors (see below), whose sum is σ = 154109592. Its totient is φ = 135475200.

The previous prime is 144745099. The next prime is 144745163. The reversal of 144745157 is 751547441.

It can be written as a sum of positive squares in 4 ways, for example, as 196 + 144744961 = 14^2 + 12031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144745157 - 2¹² = 144741061 is a prime.

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 144745157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144745957) 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, 20444 + ... + 26597.

It is an arithmetic number, because the mean of its divisors is an integer number (19263699).

Almost surely, 2^144745157 is an apocalyptic number.

144745157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

144745157 is a deficient number, since it is larger than the sum of its proper divisors (9364435).

144745157 is a wasteful number, since it uses less digits than its factorization.

144745157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47239.

The product of its digits is 78400, while the sum is 38.

The square root of 144745157 is about 12031.0081456210. The cubic root of 144745157 is about 525.0508274297.

The spelling of 144745157 in words is "one hundred forty-four million, seven hundred forty-five thousand, one hundred fifty-seven".