155613201 has 8 divisors (see below), whose sum is σ = 208858944. Its totient is φ = 103054800.

The previous prime is 155613187. The next prime is 155613221. The reversal of 155613201 is 102316551.

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

It is not a de Polignac number, because 155613201 - 2⁵ = 155613169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155613221) 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, 171306 + ... + 172211.

It is an arithmetic number, because the mean of its divisors is an integer number (26107368).

Almost surely, 2^155613201 is an apocalyptic number.

It is an amenable number.

155613201 is a deficient number, since it is larger than the sum of its proper divisors (53245743).

155613201 is a wasteful number, since it uses less digits than its factorization.

155613201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343671.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 155613201 is about 12474.5020341495. The cubic root of 155613201 is about 537.8759739070.

Adding to 155613201 its reverse (102316551), we get a palindrome (257929752).

The spelling of 155613201 in words is "one hundred fifty-five million, six hundred thirteen thousand, two hundred one".