145531255 has 8 divisors (see below), whose sum is σ = 175140000. Its totient is φ = 116090016.

The previous prime is 145531247. The next prime is 145531261. The reversal of 145531255 is 552135541.

145531255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 145531255 - 2³ = 145531247 is a prime.

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, 39955 + ... + 43444.

It is an arithmetic number, because the mean of its divisors is an integer number (21892500).

Almost surely, 2^145531255 is an apocalyptic number.

145531255 is a deficient number, since it is larger than the sum of its proper divisors (29608745).

145531255 is an equidigital number, since it uses as much as digits as its factorization.

145531255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83753.

The product of its digits is 15000, while the sum is 31.

The square root of 145531255 is about 12063.6335736792. The cubic root of 145531255 is about 525.9996132658. Note that the first 3 decimals are identical.

Adding to 145531255 its reverse (552135541), we get a palindrome (697666796).

The spelling of 145531255 in words is "one hundred forty-five million, five hundred thirty-one thousand, two hundred fifty-five".