155426089 has 27 divisors (see below), whose sum is σ = 197218917. Its totient is φ = 122076864.

The previous prime is 155426083. The next prime is 155426113. The reversal of 155426089 is 980624551.

The square root of 155426089 is 12467.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 13816089 + 141610000 = 3717^2 + 11900^2 .

It is not a de Polignac number, because 155426089 - 2³ = 155426081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155426081) 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 26 ways as a sum of consecutive naturals, for example, 1134429 + ... + 1134565.

Almost surely, 2^155426089 is an apocalyptic number.

155426089 is the 12467-th square number.

155426089 is the 6234-th centered octagonal number.

It is an amenable number.

155426089 is a deficient number, since it is larger than the sum of its proper divisors (41792828).

155426089 is an equidigital number, since it uses as much as digits as its factorization.

155426089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The cubic root of 155426089 is about 537.6603036557.

The spelling of 155426089 in words is "one hundred fifty-five million, four hundred twenty-six thousand, eighty-nine".