145956269 has 4 divisors (see below), whose sum is σ = 149516220. Its totient is φ = 142396320.

The previous prime is 145956263. The next prime is 145956299. The reversal of 145956269 is 962659541.

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 31787044 + 114169225 = 5638^2 + 10685^2 .

It is a cyclic number.

It is not a de Polignac number, because 145956269 - 2¹⁶ = 145890733 is a prime.

It is a super-2 number, since 2×145956269² = 42606464920800722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145956263) 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, 1779914 + ... + 1779995.

It is an arithmetic number, because the mean of its divisors is an integer number (37379055).

Almost surely, 2^145956269 is an apocalyptic number.

It is an amenable number.

145956269 is a deficient number, since it is larger than the sum of its proper divisors (3559951).

145956269 is an equidigital number, since it uses as much as digits as its factorization.

145956269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559950.

The product of its digits is 583200, while the sum is 47.

The square root of 145956269 is about 12081.2362364122. The cubic root of 145956269 is about 526.5111641448.

The spelling of 145956269 in words is "one hundred forty-five million, nine hundred fifty-six thousand, two hundred sixty-nine".