155201889 has 8 divisors (see below), whose sum is σ = 208079872. Its totient is φ = 102895920.

The previous prime is 155201867. The next prime is 155201911. The reversal of 155201889 is 988102551.

It is an interprime number because it is at equal distance from previous prime (155201867) and next prime (155201911).

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

It is not a de Polignac number, because 155201889 - 2⁹ = 155201377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155201089) 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, 142369 + ... + 143454.

It is an arithmetic number, because the mean of its divisors is an integer number (26009984).

Almost surely, 2^155201889 is an apocalyptic number.

It is an amenable number.

155201889 is a deficient number, since it is larger than the sum of its proper divisors (52877983).

155201889 is a wasteful number, since it uses less digits than its factorization.

155201889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286007.

The product of its (nonzero) digits is 28800, while the sum is 39.

The square root of 155201889 is about 12458.0050168556. The cubic root of 155201889 is about 537.4016567148.

The spelling of 155201889 in words is "one hundred fifty-five million, two hundred one thousand, eight hundred eighty-nine".