145139255 has 8 divisors (see below), whose sum is σ = 174300000. Its totient is φ = 116022816.

The previous prime is 145139249. The next prime is 145139263. The reversal of 145139255 is 552931541.

145139255 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 145139255 - 2²⁰ = 144090679 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, 3380 + ... + 17369.

It is an arithmetic number, because the mean of its divisors is an integer number (21787500).

Almost surely, 2^145139255 is an apocalyptic number.

145139255 is a deficient number, since it is larger than the sum of its proper divisors (29160745).

145139255 is a wasteful number, since it uses less digits than its factorization.

145139255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22153.

The product of its digits is 27000, while the sum is 35.

The square root of 145139255 is about 12047.3754403189. The cubic root of 145139255 is about 525.5269146753.

The spelling of 145139255 in words is "one hundred forty-five million, one hundred thirty-nine thousand, two hundred fifty-five".