145333441 has 4 divisors (see below), whose sum is σ = 158545584. Its totient is φ = 132121300.

The previous prime is 145333399. The next prime is 145333469. The reversal of 145333441 is 144333541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144333541 = 11 ⋅13121231.

It is a cyclic number.

It is not a de Polignac number, because 145333441 - 2¹³ = 145325249 is a prime.

It is a super-2 number, since 2×145333441² = 42243618145800962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145333141) 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, 6606055 + ... + 6606076.

It is an arithmetic number, because the mean of its divisors is an integer number (39636396).

Almost surely, 2^145333441 is an apocalyptic number.

145333441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145333441 is a deficient number, since it is larger than the sum of its proper divisors (13212143).

145333441 is a wasteful number, since it uses less digits than its factorization.

145333441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13212142.

The product of its digits is 8640, while the sum is 28.

The square root of 145333441 is about 12055.4320121678. The cubic root of 145333441 is about 525.7611827727.

Adding to 145333441 its reverse (144333541), we get a palindrome (289666982).

The spelling of 145333441 in words is "one hundred forty-five million, three hundred thirty-three thousand, four hundred forty-one".