155230789 has 8 divisors (see below), whose sum is σ = 177484608. Its totient is φ = 132996480.

The previous prime is 155230783. The next prime is 155230807. The reversal of 155230789 is 987032551.

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 155230789 - 2⁷ = 155230661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155230783) 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, 22254 + ... + 28384.

It is an arithmetic number, because the mean of its divisors is an integer number (22185576).

Almost surely, 2^155230789 is an apocalyptic number.

It is an amenable number.

155230789 is a deficient number, since it is larger than the sum of its proper divisors (22253819).

155230789 is an equidigital number, since it uses as much as digits as its factorization.

155230789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9755.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 155230789 is about 12459.1648596525. The cubic root of 155230789 is about 537.4350109996.

The spelling of 155230789 in words is "one hundred fifty-five million, two hundred thirty thousand, seven hundred eighty-nine".