155430223 has 8 divisors (see below), whose sum is σ = 169268400. Its totient is φ = 141860928.

The previous prime is 155430179. The next prime is 155430239. The reversal of 155430223 is 322034551.

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 155430223 - 2¹³ = 155422031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155430263) 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, 66013 + ... + 68326.

It is an arithmetic number, because the mean of its divisors is an integer number (21158550).

Almost surely, 2^155430223 is an apocalyptic number.

155430223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155430223 is a deficient number, since it is larger than the sum of its proper divisors (13838177).

155430223 is a wasteful number, since it uses less digits than its factorization.

155430223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134441.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 155430223 is about 12467.1657966035. The cubic root of 155430223 is about 537.6650704830.

Adding to 155430223 its reverse (322034551), we get a palindrome (477464774).

The spelling of 155430223 in words is "one hundred fifty-five million, four hundred thirty thousand, two hundred twenty-three".