155601946 has 16 divisors (see below), whose sum is σ = 250136064. Its totient is φ = 72406224.

The previous prime is 155601893. The next prime is 155601947. The reversal of 155601946 is 649106551.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (155601947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44010 + ... + 47413.

It is an arithmetic number, because the mean of its divisors is an integer number (15633504).

Almost surely, 2^155601946 is an apocalyptic number.

155601946 is a deficient number, since it is larger than the sum of its proper divisors (94534118).

155601946 is a wasteful number, since it uses less digits than its factorization.

155601946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91485.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 155601946 is about 12474.0509057804. The cubic root of 155601946 is about 537.8630059839.

The spelling of 155601946 in words is "one hundred fifty-five million, six hundred one thousand, nine hundred forty-six".