155427233 has 4 divisors (see below), whose sum is σ = 167383188. Its totient is φ = 143471280.

The previous prime is 155427227. The next prime is 155427247. The reversal of 155427233 is 332724551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47100769 + 108326464 = 6863^2 + 10408^2 .

It is a cyclic number.

It is not a de Polignac number, because 155427233 - 2⁸ = 155426977 is a prime.

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 155427233.

It is not an unprimeable number, because it can be changed into a prime (155427253) 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 3 ways as a sum of consecutive naturals, for example, 5977958 + ... + 5977983.

It is an arithmetic number, because the mean of its divisors is an integer number (41845797).

Almost surely, 2^155427233 is an apocalyptic number.

155427233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155427233 is a deficient number, since it is larger than the sum of its proper divisors (11955955).

155427233 is a wasteful number, since it uses less digits than its factorization.

155427233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11955954.

The product of its digits is 25200, while the sum is 32.

The square root of 155427233 is about 12467.0458810417. The cubic root of 155427233 is about 537.6616227861.

The spelling of 155427233 in words is "one hundred fifty-five million, four hundred twenty-seven thousand, two hundred thirty-three".