155406006 has 32 divisors (see below), whose sum is σ = 394682880. Its totient is φ = 44401608.

The previous prime is 155406001. The next prime is 155406023. The reversal of 155406006 is 600604551.

It is a happy number.

155406006 is a `hidden beast` number, since 1 + 5 + 54 + 0 + 600 + 6 = 666.

155406006 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 (155406001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205186 + ... + 205941.

It is an arithmetic number, because the mean of its divisors is an integer number (12333840).

Almost surely, 2^155406006 is an apocalyptic number.

155406006 is an abundant number, since it is smaller than the sum of its proper divisors (239276874).

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

155406006 is a wasteful number, since it uses less digits than its factorization.

155406006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411145 (or 411139 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 155406006 is about 12466.1945276014. The cubic root of 155406006 is about 537.6371451734.

The spelling of 155406006 in words is "one hundred fifty-five million, four hundred six thousand, six".