145112261 has 16 divisors (see below), whose sum is σ = 171266304. Its totient is φ = 120351744.

The previous prime is 145112213. The next prime is 145112263. The reversal of 145112261 is 162211541.

It is a cyclic number.

It is not a de Polignac number, because 145112261 - 2¹⁴ = 145095877 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 (145112263) 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 15 ways as a sum of consecutive naturals, for example, 48536 + ... + 51438.

It is an arithmetic number, because the mean of its divisors is an integer number (10704144).

Almost surely, 2^145112261 is an apocalyptic number.

It is an amenable number.

145112261 is a deficient number, since it is larger than the sum of its proper divisors (26154043).

145112261 is a wasteful number, since it uses less digits than its factorization.

145112261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140.

The product of its digits is 480, while the sum is 23.

The square root of 145112261 is about 12046.2550612213. The cubic root of 145112261 is about 525.4943322815.

The spelling of 145112261 in words is "one hundred forty-five million, one hundred twelve thousand, two hundred sixty-one".