145531085 has 8 divisors (see below), whose sum is σ = 199585536. Its totient is φ = 99792720.

The previous prime is 145531079. The next prime is 145531123. The reversal of 145531085 is 580135541.

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

It is not a de Polignac number, because 145531085 - 2¹⁴ = 145514701 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, 2078981 + ... + 2079050.

It is an arithmetic number, because the mean of its divisors is an integer number (24948192).

Almost surely, 2^145531085 is an apocalyptic number.

It is an amenable number.

145531085 is a deficient number, since it is larger than the sum of its proper divisors (54054451).

145531085 is an equidigital number, since it uses as much as digits as its factorization.

145531085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158043.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 145531085 is about 12063.6265277072. The cubic root of 145531085 is about 525.9994084530. Note that the first 3 decimals are identical.

The spelling of 145531085 in words is "one hundred forty-five million, five hundred thirty-one thousand, eighty-five".