145831454 has 8 divisors (see below), whose sum is σ = 228258000. Its totient is φ = 69745456.

The previous prime is 145831451. The next prime is 145831481. The reversal of 145831454 is 454138541.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145831451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585079 + ... + 1585170.

It is an arithmetic number, because the mean of its divisors is an integer number (28532250).

Almost surely, 2^145831454 is an apocalyptic number.

145831454 is a deficient number, since it is larger than the sum of its proper divisors (82426546).

145831454 is a wasteful number, since it uses less digits than its factorization.

145831454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170274.

The product of its digits is 38400, while the sum is 35.

The square root of 145831454 is about 12076.0694764480. The cubic root of 145831454 is about 526.3610387388.

Adding to 145831454 its reverse (454138541), we get a palindrome (599969995).

The spelling of 145831454 in words is "one hundred forty-five million, eight hundred thirty-one thousand, four hundred fifty-four".