155205085 has 8 divisors (see below), whose sum is σ = 212852736. Its totient is φ = 106426320.

The previous prime is 155205073. The next prime is 155205107. The reversal of 155205085 is 580502551.

155205085 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 not a de Polignac number, because 155205085 - 2⁹ = 155204573 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, 2217181 + ... + 2217250.

It is an arithmetic number, because the mean of its divisors is an integer number (26606592).

Almost surely, 2^155205085 is an apocalyptic number.

It is an amenable number.

155205085 is a deficient number, since it is larger than the sum of its proper divisors (57647651).

155205085 is an equidigital number, since it uses as much as digits as its factorization.

155205085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434443.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 155205085 is about 12458.1332871342. The cubic root of 155205085 is about 537.4053455099.

The spelling of 155205085 in words is "one hundred fifty-five million, two hundred five thousand, eighty-five".