155050069 has 8 divisors (see below), whose sum is σ = 161830872. Its totient is φ = 148412160.

The previous prime is 155050067. The next prime is 155050073. The reversal of 155050069 is 960050551.

It is a happy number.

155050069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47679025 + 107371044 = 6905^2 + 10362^2 .

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 155050069 - 2¹ = 155050067 is a prime.

It is a super-2 number, since 2×155050069² = 48081047793809522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155050069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155050067) 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, 33504 + ... + 37849.

It is an arithmetic number, because the mean of its divisors is an integer number (20228859).

Almost surely, 2^155050069 is an apocalyptic number.

It is an amenable number.

155050069 is a deficient number, since it is larger than the sum of its proper divisors (6780803).

155050069 is an equidigital number, since it uses as much as digits as its factorization.

155050069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71447.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 155050069 is about 12451.9102550573. The cubic root of 155050069 is about 537.2263690341.

The spelling of 155050069 in words is "one hundred fifty-five million, fifty thousand, sixty-nine".