145259269 has 8 divisors (see below), whose sum is σ = 150843672. Its totient is φ = 139772160.

The previous prime is 145259267. The next prime is 145259291. The reversal of 145259269 is 962952541.

It can be written as a sum of positive squares in 4 ways, for example, as 18404100 + 126855169 = 4290^2 + 11263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145259269 - 2¹ = 145259267 is a prime.

It is a super-2 number, since 2×145259269² = 42200510460828722, 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 (145259263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21274 + ... + 27259.

It is an arithmetic number, because the mean of its divisors is an integer number (18855459).

Almost surely, 2^145259269 is an apocalyptic number.

It is an amenable number.

145259269 is a deficient number, since it is larger than the sum of its proper divisors (5584403).

145259269 is an equidigital number, since it uses as much as digits as its factorization.

145259269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48647.

The product of its digits is 194400, while the sum is 43.

The square root of 145259269 is about 12052.3553299760. The cubic root of 145259269 is about 525.6717255123.

The spelling of 145259269 in words is "one hundred forty-five million, two hundred fifty-nine thousand, two hundred sixty-nine".