155501061 has 8 divisors (see below), whose sum is σ = 208917984. Its totient is φ = 102875760.

The previous prime is 155501041. The next prime is 155501063. The reversal of 155501061 is 160105551.

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

It is not a de Polignac number, because 155501061 - 2²⁷ = 21283333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155501063) 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, 197446 + ... + 198231.

It is an arithmetic number, because the mean of its divisors is an integer number (26114748).

Almost surely, 2^155501061 is an apocalyptic number.

It is an amenable number.

155501061 is a deficient number, since it is larger than the sum of its proper divisors (53416923).

155501061 is a wasteful number, since it uses less digits than its factorization.

155501061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395811.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 155501061 is about 12470.0064554915. The cubic root of 155501061 is about 537.7467391419.

The spelling of 155501061 in words is "one hundred fifty-five million, five hundred one thousand, sixty-one".