145400593 has 4 divisors (see below), whose sum is σ = 156585268. Its totient is φ = 134215920.

The previous prime is 145400581. The next prime is 145400617. The reversal of 145400593 is 395004541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79352464 + 66048129 = 8908^2 + 8127^2 .

It is a cyclic number.

It is not a de Polignac number, because 145400593 - 2¹⁷ = 145269521 is a prime.

It is a super-2 number, since 2×145400593² = 42282664889503298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145400543) 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, 5592318 + ... + 5592343.

It is an arithmetic number, because the mean of its divisors is an integer number (39146317).

Almost surely, 2^145400593 is an apocalyptic number.

145400593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145400593 is a deficient number, since it is larger than the sum of its proper divisors (11184675).

145400593 is a wasteful number, since it uses less digits than its factorization.

145400593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11184674.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 145400593 is about 12058.2168250534. The cubic root of 145400593 is about 525.8421471132.

The spelling of 145400593 in words is "one hundred forty-five million, four hundred thousand, five hundred ninety-three".