145117454 has 8 divisors (see below), whose sum is σ = 218587680. Its totient is φ = 72254896.

The previous prime is 145117451. The next prime is 145117463. The reversal of 145117454 is 454711541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145117454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145117451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151319 + ... + 152274.

It is an arithmetic number, because the mean of its divisors is an integer number (27323460).

Almost surely, 2^145117454 is an apocalyptic number.

145117454 is a deficient number, since it is larger than the sum of its proper divisors (73470226).

145117454 is a wasteful number, since it uses less digits than its factorization.

145117454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303834.

The product of its digits is 11200, while the sum is 32.

The square root of 145117454 is about 12046.4706034589. The cubic root of 145117454 is about 525.5006006687.

Adding to 145117454 its reverse (454711541), we get a palindrome (599828995).

The spelling of 145117454 in words is "one hundred forty-five million, one hundred seventeen thousand, four hundred fifty-four".