155525223 has 8 divisors (see below), whose sum is σ = 236990848. Its totient is φ = 88871544.

The previous prime is 155525207. The next prime is 155525243. The reversal of 155525223 is 322525551.

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

It is not a de Polignac number, because 155525223 - 2⁴ = 155525207 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 (155525243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3702961 + ... + 3703002.

It is an arithmetic number, because the mean of its divisors is an integer number (29623856).

Almost surely, 2^155525223 is an apocalyptic number.

155525223 is a deficient number, since it is larger than the sum of its proper divisors (81465625).

155525223 is an equidigital number, since it uses as much as digits as its factorization.

155525223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7405973.

The product of its digits is 15000, while the sum is 30.

The square root of 155525223 is about 12470.9752224916. The cubic root of 155525223 is about 537.7745896782.

The spelling of 155525223 in words is "one hundred fifty-five million, five hundred twenty-five thousand, two hundred twenty-three".