155546406 has 80 divisors (see below), whose sum is σ = 367994880. Its totient is φ = 49034160.

The previous prime is 155546383. The next prime is 155546411. The reversal of 155546406 is 604645551.

155546406 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 4 + 640 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 235705 + ... + 236363.

It is an arithmetic number, because the mean of its divisors is an integer number (4599936).

Almost surely, 2^155546406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155546406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183997440).

155546406 is an abundant number, since it is smaller than the sum of its proper divisors (212448474).

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

155546406 is a wasteful number, since it uses less digits than its factorization.

155546406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 155546406 is about 12471.8244856156. The cubic root of 155546406 is about 537.7990040717.

It can be divided in two parts, 1555 and 46406, that added together give a square (47961 = 219²).

The spelling of 155546406 in words is "one hundred fifty-five million, five hundred forty-six thousand, four hundred six".