145075069 has 4 divisors (see below), whose sum is σ = 145102396. Its totient is φ = 145047744.

The previous prime is 145075067. The next prime is 145075079. The reversal of 145075069 is 960570541.

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 59752900 + 85322169 = 7730^2 + 9237^2 .

It is a cyclic number.

It is not a de Polignac number, because 145075069 - 2¹ = 145075067 is a prime.

It is a super-2 number, since 2×145075069² = 42093551290709522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145075061) 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, 2844 + ... + 17269.

It is an arithmetic number, because the mean of its divisors is an integer number (36275599).

Almost surely, 2^145075069 is an apocalyptic number.

It is an amenable number.

145075069 is a deficient number, since it is larger than the sum of its proper divisors (27327).

145075069 is an equidigital number, since it uses as much as digits as its factorization.

145075069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27326.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 145075069 is about 12044.7112460200. The cubic root of 145075069 is about 525.4494340420.

The spelling of 145075069 in words is "one hundred forty-five million, seventy-five thousand, sixty-nine".