145152269 has 4 divisors (see below), whose sum is σ = 145193244. Its totient is φ = 145111296.

The previous prime is 145152263. The next prime is 145152281. The reversal of 145152269 is 962251541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 962251541 = 11813 ⋅81457.

It can be written as a sum of positive squares in 2 ways, for example, as 128029225 + 17123044 = 11315^2 + 4138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145152269 is a prime.

It is a super-2 number, since 2×145152269² = 42138362391696722, 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 (145152263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14612 + ... + 22445.

It is an arithmetic number, because the mean of its divisors is an integer number (36298311).

Almost surely, 2^145152269 is an apocalyptic number.

It is an amenable number.

145152269 is a deficient number, since it is larger than the sum of its proper divisors (40975).

145152269 is an equidigital number, since it uses as much as digits as its factorization.

145152269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40974.

The product of its digits is 21600, while the sum is 35.

The square root of 145152269 is about 12047.9155458527. The cubic root of 145152269 is about 525.5426214365.

The spelling of 145152269 in words is "one hundred forty-five million, one hundred fifty-two thousand, two hundred sixty-nine".