145998593 has 6 divisors (see below), whose sum is σ = 158093334. Its totient is φ = 134767776.

The previous prime is 145998563. The next prime is 145998617. The reversal of 145998593 is 395899541.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2765569 + 143233024 = 1663^2 + 11968^2 .

It is not a de Polignac number, because 145998593 - 2⁶ = 145998529 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (145998563) 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 5 ways as a sum of consecutive naturals, for example, 431780 + ... + 432117.

It is an arithmetic number, because the mean of its divisors is an integer number (26348889).

Almost surely, 2^145998593 is an apocalyptic number.

145998593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145998593 is a deficient number, since it is larger than the sum of its proper divisors (12094741).

145998593 is an equidigital number, since it uses as much as digits as its factorization.

145998593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863923 (or 863910 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 53.

The square root of 145998593 is about 12082.9877513800. The cubic root of 145998593 is about 526.5620513159.

The spelling of 145998593 in words is "one hundred forty-five million, nine hundred ninety-eight thousand, five hundred ninety-three".