145055765 has 4 divisors (see below), whose sum is σ = 174066924. Its totient is φ = 116044608.

The previous prime is 145055761. The next prime is 145055773. The reversal of 145055765 is 567550541.

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 28976689 + 116079076 = 5383^2 + 10774^2 .

It is a cyclic number.

It is not a de Polignac number, because 145055765 - 2² = 145055761 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145055761) 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, 14505572 + ... + 14505581.

It is an arithmetic number, because the mean of its divisors is an integer number (43516731).

Almost surely, 2^145055765 is an apocalyptic number.

It is an amenable number.

145055765 is a deficient number, since it is larger than the sum of its proper divisors (29011159).

145055765 is an equidigital number, since it uses as much as digits as its factorization.

145055765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29011158.

The product of its (nonzero) digits is 105000, while the sum is 38.

The square root of 145055765 is about 12043.9098717983. The cubic root of 145055765 is about 525.4261271984.

The spelling of 145055765 in words is "one hundred forty-five million, fifty-five thousand, seven hundred sixty-five".