145665254 has 8 divisors (see below), whose sum is σ = 249711888. Its totient is φ = 62427960.

The previous prime is 145665227. The next prime is 145665257. The reversal of 145665254 is 452566541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145665257) 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, 5202317 + ... + 5202344.

It is an arithmetic number, because the mean of its divisors is an integer number (31213986).

Almost surely, 2^145665254 is an apocalyptic number.

145665254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145665254 is a deficient number, since it is larger than the sum of its proper divisors (104046634).

145665254 is a wasteful number, since it uses less digits than its factorization.

145665254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10404670.

The product of its digits is 144000, while the sum is 38.

The square root of 145665254 is about 12069.1861366042. The cubic root of 145665254 is about 526.1610031118.

The spelling of 145665254 in words is "one hundred forty-five million, six hundred sixty-five thousand, two hundred fifty-four".