145585793 has 4 divisors (see below), whose sum is σ = 149136708. Its totient is φ = 142034880.

The previous prime is 145585789. The next prime is 145585799. The reversal of 145585793 is 397585541.

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 83302129 + 62283664 = 9127^2 + 7892^2 .

It is a cyclic number.

It is not a de Polignac number, because 145585793 - 2² = 145585789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145585799) 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, 1775396 + ... + 1775477.

It is an arithmetic number, because the mean of its divisors is an integer number (37284177).

Almost surely, 2^145585793 is an apocalyptic number.

It is an amenable number.

145585793 is a deficient number, since it is larger than the sum of its proper divisors (3550915).

145585793 is an equidigital number, since it uses as much as digits as its factorization.

145585793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550914.

The product of its digits is 756000, while the sum is 47.

The square root of 145585793 is about 12065.8937920073. The cubic root of 145585793 is about 526.0653113734.

The spelling of 145585793 in words is "one hundred forty-five million, five hundred eighty-five thousand, seven hundred ninety-three".