145901 has 8 divisors (see below), whose sum is σ = 175680. Its totient is φ = 118368.

The previous prime is 145897. The next prime is 145903. The reversal of 145901 is 109541.

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 145901 - 2² = 145897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145901.

It is not an unprimeable number, because it can be changed into a prime (145903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (21960).

2¹⁴⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

145901 is a deficient number, since it is larger than the sum of its proper divisors (29779).

145901 is a wasteful number, since it uses less digits than its factorization.

145901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 145901 is about 381.9698941016. The cubic root of 145901 is about 52.6444698073.

The spelling of 145901 in words is "one hundred forty-five thousand, nine hundred one".