145787 has 4 divisors (see below), whose sum is σ = 153480. Its totient is φ = 138096.

The previous prime is 145777. The next prime is 145799. The reversal of 145787 is 787541.

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 145787 - 2⁴ = 145771 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145787.

It is not an unprimeable number, because it can be changed into a prime (145757) 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, 3818 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (38370).

2¹⁴⁵⁷⁸⁷ is an apocalyptic number.

145787 is a deficient number, since it is larger than the sum of its proper divisors (7693).

145787 is an equidigital number, since it uses as much as digits as its factorization.

145787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7692.

The product of its digits is 7840, while the sum is 32.

The square root of 145787 is about 381.8206385202. The cubic root of 145787 is about 52.6307549520.

It can be divided in two parts, 14 and 5787, that multiplied together give a palindrome (81018).

The spelling of 145787 in words is "one hundred forty-five thousand, seven hundred eighty-seven".