155606013 has 6 divisors (see below), whose sum is σ = 224764254. Its totient is φ = 103737336.

The previous prime is 155605987. The next prime is 155606023. The reversal of 155606013 is 310606551.

It is a happy number.

155606013 is a `hidden beast` number, since 1 + 5 + 56 + 0 + 601 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 152843769 + 2762244 = 12363^2 + 1662^2 .

It is not a de Polignac number, because 155606013 - 2¹⁰ = 155604989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155606023) 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 5 ways as a sum of consecutive naturals, for example, 8644770 + ... + 8644787.

It is an arithmetic number, because the mean of its divisors is an integer number (37460709).

Almost surely, 2^155606013 is an apocalyptic number.

It is an amenable number.

155606013 is a deficient number, since it is larger than the sum of its proper divisors (69158241).

155606013 is a wasteful number, since it uses less digits than its factorization.

155606013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17289563 (or 17289560 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 155606013 is about 12474.2139231296. The cubic root of 155606013 is about 537.8676920217.

The spelling of 155606013 in words is "one hundred fifty-five million, six hundred six thousand, thirteen".