155606655 has 16 divisors (see below), whose sum is σ = 250791264. Its totient is φ = 82383360.

The previous prime is 155606651. The next prime is 155606681. The reversal of 155606655 is 556606551.

It is not a de Polignac number, because 155606655 - 2² = 155606651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155606651) 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 15 ways as a sum of consecutive naturals, for example, 35806 + ... + 39915.

It is an arithmetic number, because the mean of its divisors is an integer number (15674454).

Almost surely, 2^155606655 is an apocalyptic number.

155606655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155606655 is a deficient number, since it is larger than the sum of its proper divisors (95184609).

155606655 is a wasteful number, since it uses less digits than its factorization.

155606655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75866.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 155606655 is about 12474.2396561875. The cubic root of 155606655 is about 537.8684317330.

The spelling of 155606655 in words is "one hundred fifty-five million, six hundred six thousand, six hundred fifty-five".