145641445 has 8 divisors (see below), whose sum is σ = 176403744. Its totient is φ = 115423824.

The previous prime is 145641443. The next prime is 145641449. The reversal of 145641445 is 544146541.

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 145641445 - 2¹ = 145641443 is a prime.

It is a super-2 number, since 2×145641445² = 42422861003376050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145641445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145641443) 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, 135579 + ... + 136648.

It is an arithmetic number, because the mean of its divisors is an integer number (22050468).

Almost surely, 2^145641445 is an apocalyptic number.

It is an amenable number.

145641445 is a deficient number, since it is larger than the sum of its proper divisors (30762299).

145641445 is a wasteful number, since it uses less digits than its factorization.

145641445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272339.

The product of its digits is 38400, while the sum is 34.

The square root of 145641445 is about 12068.1997414693. The cubic root of 145641445 is about 526.1323345274.

Adding to 145641445 its reverse (544146541), we get a palindrome (689787986).

The spelling of 145641445 in words is "one hundred forty-five million, six hundred forty-one thousand, four hundred forty-five".