145000855 has 8 divisors (see below), whose sum is σ = 181566432. Its totient is φ = 110957088.

The previous prime is 145000831. The next prime is 145000861. The reversal of 145000855 is 558000541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145000855 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, 630324 + ... + 630553.

It is an arithmetic number, because the mean of its divisors is an integer number (22695804).

Almost surely, 2^145000855 is an apocalyptic number.

145000855 is a deficient number, since it is larger than the sum of its proper divisors (36565577).

145000855 is a wasteful number, since it uses less digits than its factorization.

145000855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260905.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 145000855 is about 12041.6300806826. The cubic root of 145000855 is about 525.3598198490.

The spelling of 145000855 in words is "one hundred forty-five million, eight hundred fifty-five", and thus it is an aban number.