144557957 has 4 divisors (see below), whose sum is σ = 144745740. Its totient is φ = 144370176.

The previous prime is 144557939. The next prime is 144557971. The reversal of 144557957 is 759755441.

144557957 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 2 ways, for example, as 56085121 + 88472836 = 7489^2 + 9406^2 .

It is a cyclic number.

It is not a de Polignac number, because 144557957 - 2⁶ = 144557893 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 (144557857) 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, 92732 + ... + 94277.

It is an arithmetic number, because the mean of its divisors is an integer number (36186435).

Almost surely, 2^144557957 is an apocalyptic number.

It is an amenable number.

144557957 is a deficient number, since it is larger than the sum of its proper divisors (187783).

144557957 is an equidigital number, since it uses as much as digits as its factorization.

144557957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187782.

The product of its digits is 882000, while the sum is 47.

The square root of 144557957 is about 12023.2257318908. The cubic root of 144557957 is about 524.8243790514.

The spelling of 144557957 in words is "one hundred forty-four million, five hundred fifty-seven thousand, nine hundred fifty-seven".