155161201 has 8 divisors (see below), whose sum is σ = 175891520. Its totient is φ = 135687312.

The previous prime is 155161189. The next prime is 155161207. The reversal of 155161201 is 102161551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155161201 - 2⁷ = 155161073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155161207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313845 + ... + 314338.

It is an arithmetic number, because the mean of its divisors is an integer number (21986440).

Almost surely, 2^155161201 is an apocalyptic number.

It is an amenable number.

155161201 is a deficient number, since it is larger than the sum of its proper divisors (20730319).

155161201 is a wasteful number, since it uses less digits than its factorization.

155161201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628215.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 155161201 is about 12456.3719035681. The cubic root of 155161201 is about 537.3546905561.

The spelling of 155161201 in words is "one hundred fifty-five million, one hundred sixty-one thousand, two hundred one".