144260257 has 4 divisors (see below), whose sum is σ = 144304560. Its totient is φ = 144215956.

The previous prime is 144260231. The next prime is 144260279. The reversal of 144260257 is 752062441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144260257 is a prime.

It is a super-2 number, since 2×144260257² = 41622043499412098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144260287) 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, 16843 + ... + 23920.

It is an arithmetic number, because the mean of its divisors is an integer number (36076140).

Almost surely, 2^144260257 is an apocalyptic number.

It is an amenable number.

144260257 is a deficient number, since it is larger than the sum of its proper divisors (44303).

144260257 is an equidigital number, since it uses as much as digits as its factorization.

144260257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44302.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 144260257 is about 12010.8391463711. The cubic root of 144260257 is about 524.4638602290.

The spelling of 144260257 in words is "one hundred forty-four million, two hundred sixty thousand, two hundred fifty-seven".