144641506 has 4 divisors (see below), whose sum is σ = 216962262. Its totient is φ = 72320752.

The previous prime is 144641489. The next prime is 144641521. The reversal of 144641506 is 605146441.

144641506 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.

It can be written as a sum of positive squares in only one way, i.e., 112254025 + 32387481 = 10595^2 + 5691^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36160375 + ... + 36160378.

Almost surely, 2^144641506 is an apocalyptic number.

144641506 is a deficient number, since it is larger than the sum of its proper divisors (72320756).

144641506 is an equidigital number, since it uses as much as digits as its factorization.

144641506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72320755.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 144641506 is about 12026.6997135540. The cubic root of 144641506 is about 524.9254690872.

Adding to 144641506 its reverse (605146441), we get a palindrome (749787947).

The spelling of 144641506 in words is "one hundred forty-four million, six hundred forty-one thousand, five hundred six".