155612016 has 200 divisors, whose sum is σ = 545545440. Its totient is φ = 41803776.

The previous prime is 155612011. The next prime is 155612027. The reversal of 155612016 is 610216551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155612011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 153720 + ... + 154728.

Almost surely, 2^155612016 is an apocalyptic number.

155612016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155612016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272772720).

155612016 is an abundant number, since it is smaller than the sum of its proper divisors (389933424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155612016 is a wasteful number, since it uses less digits than its factorization.

155612016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 155612016 is about 12474.4545371732. The cubic root of 155612016 is about 537.8746085887.

Adding to 155612016 its reverse (610216551), we get a palindrome (765828567).

It can be divided in two parts, 155 and 612016, that added together give a triangular number (612171 = T₁₁₀₆).

The spelling of 155612016 in words is "one hundred fifty-five million, six hundred twelve thousand, sixteen".