155050072 has 16 divisors (see below), whose sum is σ = 291828240. Its totient is φ = 77229216.

The previous prime is 155050067. The next prime is 155050073. The reversal of 155050072 is 270050551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155050073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34743 + ... + 38950.

It is an arithmetic number, because the mean of its divisors is an integer number (18239265).

Almost surely, 2^155050072 is an apocalyptic number.

It is an amenable number.

155050072 is a deficient number, since it is larger than the sum of its proper divisors (136778168).

155050072 is a wasteful number, since it uses less digits than its factorization.

155050072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73962 (or 73958 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 155050072 is about 12451.9103755207. The cubic root of 155050072 is about 537.2263724990.

The spelling of 155050072 in words is "one hundred fifty-five million, fifty thousand, seventy-two".