145504405 has 8 divisors (see below), whose sum is σ = 175286232. Its totient is φ = 115949568.

The previous prime is 145504379. The next prime is 145504439. The reversal of 145504405 is 504405541.

It can be written as a sum of positive squares in 4 ways, for example, as 14424804 + 131079601 = 3798^2 + 11449^2 .

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 145504405 - 2⁷ = 145504277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55332 + ... + 57901.

It is an arithmetic number, because the mean of its divisors is an integer number (21910779).

Almost surely, 2^145504405 is an apocalyptic number.

It is an amenable number.

145504405 is a deficient number, since it is larger than the sum of its proper divisors (29781827).

145504405 is a wasteful number, since it uses less digits than its factorization.

145504405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113495.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 145504405 is about 12062.5206735574. The cubic root of 145504405 is about 525.9672629223.

Adding to 145504405 its reverse (504405541), we get a palindrome (649909946).

The spelling of 145504405 in words is "one hundred forty-five million, five hundred four thousand, four hundred five".