155633166 has 48 divisors (see below), whose sum is σ = 366073344. Its totient is φ = 47500992.

The previous prime is 155633119. The next prime is 155633167. The reversal of 155633166 is 661336551.

155633166 is a `hidden beast` number, since 1 + 5 + 5 + 633 + 16 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 155633166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155633167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27100 + ... + 32336.

It is an arithmetic number, because the mean of its divisors is an integer number (7626528).

Almost surely, 2^155633166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155633166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183036672).

155633166 is an abundant number, since it is smaller than the sum of its proper divisors (210440178).

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

155633166 is a wasteful number, since it uses less digits than its factorization.

155633166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5385 (or 5382 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 155633166 is about 12475.3022408277. The cubic root of 155633166 is about 537.8989758857.

The spelling of 155633166 in words is "one hundred fifty-five million, six hundred thirty-three thousand, one hundred sixty-six".