155016665 has 8 divisors (see below), whose sum is σ = 194107968. Its totient is φ = 118621360.

The previous prime is 155016661. The next prime is 155016683. The reversal of 155016665 is 566610551.

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

It is not a de Polignac number, because 155016665 - 2² = 155016661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155016661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673871 + ... + 674100.

It is an arithmetic number, because the mean of its divisors is an integer number (24263496).

Almost surely, 2^155016665 is an apocalyptic number.

It is an amenable number.

155016665 is a deficient number, since it is larger than the sum of its proper divisors (39091303).

155016665 is a wasteful number, since it uses less digits than its factorization.

155016665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347999.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 155016665 is about 12450.5688625058. The cubic root of 155016665 is about 537.1877862318.

The spelling of 155016665 in words is "one hundred fifty-five million, sixteen thousand, six hundred sixty-five".