103155066 has 128 divisors (see below), whose sum is σ = 282009600. Its totient is φ = 27293760.

The previous prime is 103155061. The next prime is 103155067. The reversal of 103155066 is 660551301.

It is a happy number.

103155066 is a `hidden beast` number, since 103 + 1 + 550 + 6 + 6 = 666.

103155066 is a nontrivial binomial coefficient, being equal to C(14364, 2).

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

It is not an unprimeable number, because it can be changed into a prime (103155061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 380511 + ... + 380781.

It is an arithmetic number, because the mean of its divisors is an integer number (2203200).

Almost surely, 2^103155066 is an apocalyptic number.

103155066 is the 14363-rd triangular number and also the 7182-nd hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103155066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141004800).

103155066 is an abundant number, since it is smaller than the sum of its proper divisors (178854534).

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

103155066 is a wasteful number, since it uses less digits than its factorization.

103155066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 355 counting only the distinct ones).

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

The square root of 103155066 is about 10156.5282454193. The cubic root of 103155066 is about 468.9899328478.

The spelling of 103155066 in words is "one hundred three million, one hundred fifty-five thousand, sixty-six".