155985006 has 16 divisors (see below), whose sum is σ = 315060048. Its totient is φ = 51480000.

The previous prime is 155984999. The next prime is 155985019. The reversal of 155985006 is 600589551.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128095 + ... + 129306.

It is an arithmetic number, because the mean of its divisors is an integer number (19691253).

Almost surely, 2^155985006 is an apocalyptic number.

155985006 is an abundant number, since it is smaller than the sum of its proper divisors (159075042).

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

155985006 is a wasteful number, since it uses less digits than its factorization.

155985006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257507.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 155985006 is about 12489.3957419885. The cubic root of 155985006 is about 538.3040136711.

The spelling of 155985006 in words is "one hundred fifty-five million, nine hundred eighty-five thousand, six".