145027073 has 4 divisors (see below), whose sum is σ = 147404628. Its totient is φ = 142649520.

The previous prime is 145027063. The next prime is 145027081. The reversal of 145027073 is 370720541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370720541 = 59 ⋅6283399.

It can be written as a sum of positive squares in 2 ways, for example, as 62362609 + 82664464 = 7897^2 + 9092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145027073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145027033) 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, 1188686 + ... + 1188807.

It is an arithmetic number, because the mean of its divisors is an integer number (36851157).

Almost surely, 2^145027073 is an apocalyptic number.

It is an amenable number.

145027073 is a deficient number, since it is larger than the sum of its proper divisors (2377555).

145027073 is an equidigital number, since it uses as much as digits as its factorization.

145027073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377554.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 145027073 is about 12042.7186714629. The cubic root of 145027073 is about 525.3914818547.

The spelling of 145027073 in words is "one hundred forty-five million, twenty-seven thousand, seventy-three".