145457 has 8 divisors (see below), whose sum is σ = 159936. Its totient is φ = 131472.

The previous prime is 145451. The next prime is 145459. The reversal of 145457 is 754541.

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 145457 - 2⁴ = 145441 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145457.

It is not an unprimeable number, because it can be changed into a prime (145451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788 + ... + 954.

It is an arithmetic number, because the mean of its divisors is an integer number (19992).

2¹⁴⁵⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

145457 is a deficient number, since it is larger than the sum of its proper divisors (14479).

145457 is a wasteful number, since it uses less digits than its factorization.

145457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 2800, while the sum is 26.

The square root of 145457 is about 381.3882536209. The cubic root of 145457 is about 52.5910137077.

Adding to 145457 its reverse (754541), we get a palindrome (899998).

The spelling of 145457 in words is "one hundred forty-five thousand, four hundred fifty-seven".