145779 has 4 divisors (see below), whose sum is σ = 194376. Its totient is φ = 97184.

The previous prime is 145777. The next prime is 145799. The reversal of 145779 is 977541.

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

It is a cyclic number.

It is not a de Polignac number, because 145779 - 2¹ = 145777 is a prime.

It is a D-number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (145771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24294 + ... + 24299.

It is an arithmetic number, because the mean of its divisors is an integer number (48594).

2¹⁴⁵⁷⁷⁹ is an apocalyptic number.

145779 is a deficient number, since it is larger than the sum of its proper divisors (48597).

145779 is an equidigital number, since it uses as much as digits as its factorization.

145779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48596.

The product of its digits is 8820, while the sum is 33.

The square root of 145779 is about 381.8101622534. The cubic root of 145779 is about 52.6297922376.

The spelling of 145779 in words is "one hundred forty-five thousand, seven hundred seventy-nine".