155166844 has 48 divisors (see below), whose sum is σ = 328204800. Its totient is φ = 62703936.

The previous prime is 155166827. The next prime is 155166857. The reversal of 155166844 is 448661551.

It is a junction number, because it is equal to n+sod(n) for n = 155166797 and 155166806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139362 + ... + 140470.

It is an arithmetic number, because the mean of its divisors is an integer number (6837600).

Almost surely, 2^155166844 is an apocalyptic number.

155166844 is a gapful number since it is divisible by the number (14) 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 155166844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164102400).

155166844 is an abundant number, since it is smaller than the sum of its proper divisors (173037956).

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

155166844 is a wasteful number, since it uses less digits than its factorization.

155166844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1400 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 155166844 is about 12456.5984120867. The cubic root of 155166844 is about 537.3612047614.

The spelling of 155166844 in words is "one hundred fifty-five million, one hundred sixty-six thousand, eight hundred forty-four".