144158257 has 6 divisors (see below), whose sum is σ = 144742038. Its totient is φ = 143576064.

The previous prime is 144158237. The next prime is 144158293. The reversal of 144158257 is 752851441.

144158257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 84621601 + 59536656 = 9199^2 + 7716^2 .

It is not a de Polignac number, because 144158257 - 2⁷ = 144158129 is a prime.

It is a super-2 number, since 2×144158257² = 41563206122556098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144158237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 249553 + ... + 250129.

It is an arithmetic number, because the mean of its divisors is an integer number (24123673).

Almost surely, 2^144158257 is an apocalyptic number.

It is an amenable number.

144158257 is a deficient number, since it is larger than the sum of its proper divisors (583781).

144158257 is an frugal number, since it uses more digits than its factorization.

144158257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1010 counting only the distinct ones).

The product of its digits is 44800, while the sum is 37.

The square root of 144158257 is about 12006.5922309371. The cubic root of 144158257 is about 524.3402227425.

The spelling of 144158257 in words is "one hundred forty-four million, one hundred fifty-eight thousand, two hundred fifty-seven".