155085415 has 16 divisors (see below), whose sum is σ = 188448768. Its totient is φ = 122514336.

The previous prime is 155085379. The next prime is 155085419. The reversal of 155085415 is 514580551.

It is a cyclic number.

It is not a de Polignac number, because 155085415 - 2¹⁷ = 154954343 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 (155085419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179274 + ... + 180136.

It is an arithmetic number, because the mean of its divisors is an integer number (11778048).

Almost surely, 2^155085415 is an apocalyptic number.

155085415 is a deficient number, since it is larger than the sum of its proper divisors (33363353).

155085415 is a wasteful number, since it uses less digits than its factorization.

155085415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 20000, while the sum is 34.

The square root of 155085415 is about 12453.3294744819. The cubic root of 155085415 is about 537.2671888816.

The spelling of 155085415 in words is "one hundred fifty-five million, eighty-five thousand, four hundred fifteen".