155187085 has 12 divisors (see below), whose sum is σ = 192431484. Its totient is φ = 120141120.

The previous prime is 155187083. The next prime is 155187089. The reversal of 155187085 is 580781551.

It can be written as a sum of positive squares in 2 ways, for example, as 112402404 + 42784681 = 10602^2 + 6541^2 .

It is not a de Polignac number, because 155187085 - 2¹ = 155187083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155187083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11344 + ... + 20953.

It is an arithmetic number, because the mean of its divisors is an integer number (16035957).

Almost surely, 2^155187085 is an apocalyptic number.

It is an amenable number.

155187085 is a deficient number, since it is larger than the sum of its proper divisors (37244399).

155187085 is an equidigital number, since it uses as much as digits as its factorization.

155187085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32364 (or 32333 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 40.

The square root of 155187085 is about 12457.4108465604. The cubic root of 155187085 is about 537.3845694076.

The spelling of 155187085 in words is "one hundred fifty-five million, one hundred eighty-seven thousand, eighty-five".