145189573 has 4 divisors (see below), whose sum is σ = 150196140. Its totient is φ = 140183008.

The previous prime is 145189567. The next prime is 145189579. The reversal of 145189573 is 375981541.

145189573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 375981541 = 13 ⋅28921657.

It is an interprime number because it is at equal distance from previous prime (145189567) and next prime (145189579).

It can be written as a sum of positive squares in 2 ways, for example, as 31169889 + 114019684 = 5583^2 + 10678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145189573 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 (145189579) 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, 2503240 + ... + 2503297.

It is an arithmetic number, because the mean of its divisors is an integer number (37549035).

Almost surely, 2^145189573 is an apocalyptic number.

It is an amenable number.

145189573 is a deficient number, since it is larger than the sum of its proper divisors (5006567).

145189573 is an equidigital number, since it uses as much as digits as its factorization.

145189573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006566.

The product of its digits is 151200, while the sum is 43.

The square root of 145189573 is about 12049.4635980196. The cubic root of 145189573 is about 525.5876389042.

The spelling of 145189573 in words is "one hundred forty-five million, one hundred eighty-nine thousand, five hundred seventy-three".